The 3.17.8 stable update contains a number of important fixes across the tree.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple vulnerabilities has been found and corrected in the Linux kernel :

The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a module name in the salg_name field, a different vulnerability than CVE-2014-9644 (CVE-2013-7421).

arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 3.17.2 on Intel processors does not ensure that the value in the CR4 control register remains the same after a VM entry, which allows host OS users to kill arbitrary processes or cause a denial of service (system disruption) by leveraging /dev/kvm access, as demonstrated by PR_SET_TSC prctl calls within a modified copy of QEMU (CVE-2014-3690).

arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1 allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area system call and later reads a 16-bit value (CVE-2014-8133).

net/netfilter/nf_conntrack_proto_generic.c in the Linux kernel before 3.18 generates incorrect conntrack entries during handling of certain iptables rule sets for the SCTP, DCCP, GRE, and UDP-Lite protocols, which allows remote attackers to bypass intended access restrictions via packets with disallowed port numbers (CVE-2014-8160).

The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in certain namespace scenarios, which allows local users to bypass intended file permissions by leveraging a POSIX ACL containing an entry for the group category that is more restrictive than the entry for the other category, aka a negative groups issue, related to kernel/groups.c, kernel/uid16.c, and kernel/user_namespace.c (CVE-2014-8989).

The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that reads a TLS base address (CVE-2014-9419).

The rock_continue function in fs/isofs/rock.c in the Linux kernel through 3.18.1 does not restrict the number of Rock Ridge continuation entries, which allows local users to cause a denial of service (infinite loop, and system crash or hang) via a crafted iso9660 image (CVE-2014-9420).

The batadv_frag_merge_packets function in net/batman-adv/fragmentation.c in the B.A.T.M.A.N. implementation in the Linux kernel through 3.18.1 uses an incorrect length field during a calculation of an amount of memory, which allows remote attackers to cause a denial of service (mesh-node system crash) via fragmented packets (CVE-2014-9428).

Race condition in the key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 3.18.2 allows local users to cause a denial of service (memory corruption or panic) or possibly have unspecified other impact via keyctl commands that trigger access to a key structure member during garbage collection of a key (CVE-2014-9529).

The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel before 3.18.2 does not validate a length value in the Extensions Reference (ER) System Use Field, which allows local users to obtain sensitive information from kernel memory via a crafted iso9660 image (CVE-2014-9584).

The vdso_addr function in arch/x86/vdso/vma.c in the Linux kernel through 3.18.2 does not properly choose memory locations for the vDSO area, which makes it easier for local users to bypass the ASLR protection mechanism by guessing a location at the end of a PMD (CVE-2014-9585).

The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a parenthesized module template expression in the salg_name field, as demonstrated by the vfat(aes) expression, a different vulnerability than CVE-2013-7421 (CVE-2014-9644).

Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted filename (CVE-2014-9683).

The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction (CVE-2015-0239).

The updated packages provides a solution for these security issues.

According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - The Linux kernel, before version 4.14.3, is vulnerable     to a denial of service in     drivers/md/dm.c:dm_get_from_kobject() which can be     caused by local users leveraging a race condition with
    __dm_destroy() during creation and removal of DM     devices. Only privileged local users (with     CAP_SYS_ADMIN capability) can directly perform the     ioctl operations for dm device creation and removal and     this would typically be outside the direct control of     the unprivileged attacker.(CVE-2017-18203i1/4%0

  - The batadv_frag_merge_packets function in     net/batman-adv/fragmentation.c in the B.A.T.M.A.N.
    implementation in the Linux kernel through 3.18.1 uses     an incorrect length field during a calculation of an     amount of memory, which allows remote attackers to     cause a denial of service (mesh-node system crash) via     fragmented packets.(CVE-2014-9428i1/4%0

  - The regulator_ena_gpio_free function in     drivers/regulator/core.c in the Linux kernel allows     local users to gain privileges or cause a denial of     service (use-after-free) via a crafted     application.(CVE-2014-9940i1/4%0

  - The Linux kernel before 3.12, when UDP Fragmentation     Offload (UFO) is enabled, does not properly initialize     certain data structures, which allows local users to     cause a denial of service (memory corruption and system     crash) or possibly gain privileges via a crafted     application that uses the UDP_CORK option in a     setsockopt system call and sends both short and long     packets, related to the ip_ufo_append_data function in     net/ipv4/ip_output.c and the ip6_ufo_append_data     function in net/ipv6/ip6_output.c.(CVE-2013-4470i1/4%0

  - A use-after-free flaw was found in the way the Linux     kernel's Datagram Congestion Control Protocol (DCCP)     implementation freed SKB (socket buffer) resources for     a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO     option is set on the socket. A local, unprivileged user     could use this flaw to alter the kernel memory,     allowing them to escalate their privileges on the     system.(CVE-2017-6074i1/4%0

  - A NULL-pointer dereference vulnerability was found in     the Linux kernel's TCP stack, in     net/netfilter/nf_nat_redirect.c in the     nf_nat_redirect_ipv4() function. A remote,     unauthenticated user could exploit this flaw to create     a system crash (denial of service).(CVE-2015-8787i1/4%0

  - A use-after-free flaw was found in the CXGB3 kernel     driver when the network was considered to be congested.
    The kernel incorrectly misinterpreted the congestion as     an error condition and incorrectly freed or cleaned up     the socket buffer (skb). When the device then sent the     skb's queued data, these structures were referenced. A     local attacker could use this flaw to panic the system     (denial of service) or, with a local account, escalate     their privileges.(CVE-2015-8812i1/4%0

  - A flaw was found in the way the Linux kernel's     networking implementation handled UDP packets with     incorrect checksum values. A remote attacker could     potentially use this flaw to trigger an infinite loop     in the kernel, resulting in a denial of service on the     system, or cause a denial of service in applications     using the edge triggered epoll     functionality.(CVE-2015-5364i1/4%0

  - The timer_create syscall implementation in     kernel/time/posix-timers.c in the Linux kernel doesn't     properly validate the sigevent-i1/4zsigev_notify field,     which leads to out-of-bounds access in the show_timer     function.(CVE-2017-18344i1/4%0

  - A flaw was discovered in the way the Linux kernel dealt     with paging structures. When the kernel invalidated a     paging structure that was not in use locally, it could,     in principle, race against another CPU that is     switching to a process that uses the paging structure     in question. A local user could use a thread running     with a stale cached virtual-i1/4zphysical translation to     potentially escalate their privileges if the     translation in question were writable and the physical     page got reused for something critical (for example, a     page table).(CVE-2016-2069i1/4%0

  - Use after free vulnerability was found in percpu using     previously allocated memory in bpf. First
    __alloc_percpu_gfp() is called, then the memory is     freed with free_percpu() which triggers async     pcpu_balance_work and then pcpu_extend_area_map could     use a chunk after it has been freed.(CVE-2016-4794i1/4%0

  - A missing authorization check in the     fscrypt_process_policy function in fs/crypto/policy.c     in the ext4 and f2fs filesystem encryption support in     the Linux kernel allows a user to assign an encryption     policy to a directory owned by a different user,     potentially creating a denial of     service.(CVE-2016-10318i1/4%0

  - The security_context_to_sid_core function in     security/selinux/ss/services.c in the Linux kernel     before 3.13.4 allows local users to cause a denial of     service (system crash) by leveraging the CAP_MAC_ADMIN     capability to set a zero-length security     context.(CVE-2014-1874i1/4%0

  - The vfe31_proc_general function in     drivers/media/video/msm/vfe/msm_vfe31.c in the     MSM-VFE31 driver for the Linux kernel 3.x, as used in     Qualcomm Innovation Center (QuIC) Android contributions     for MSM devices and other products, does not validate a     certain id value, which allows attackers to gain     privileges or cause a denial of service (memory     corruption) via an application that makes a crafted     ioctl call.(CVE-2014-9410i1/4%0

  - A vulnerability was found in the Key Management sub     component of the Linux kernel, where when trying to     issue a KEYTCL_READ on a negative key would lead to a     NULL pointer dereference. A local attacker could use     this flaw to crash the kernel.(CVE-2017-12192i1/4%0

  - Out-of-bounds memory read in the x509_decode_time     function in x509_cert_parser.c in Linux kernels 4.3-rc1     and after.(CVE-2015-5327i1/4%0

  - It was found that the espfix functionality does not     work for 32-bit KVM paravirtualized guests. A local,     unprivileged guest user could potentially use this flaw     to leak kernel stack addresses.(CVE-2014-8134i1/4%0

  - An out-of-bounds write flaw was found in the way the     Apple Magic Mouse/Trackpad multi-touch driver handled     Human Interface Device (HID) reports with an invalid     size. An attacker with physical access to the system     could use this flaw to crash the system or,     potentially, escalate their privileges on the     system.(CVE-2014-3181i1/4%0

  - A use-after-free flaw was found in the way the Linux     kernel's key management subsystem handled keyring     object reference counting in certain error path of the     join_session_keyring() function. A local, unprivileged     user could use this flaw to escalate their privileges     on the system.(CVE-2016-0728i1/4%0

  - Use-after-free vulnerability in the skb_segment     function in net/core/skbuff.c in the Linux kernel     through 3.13.6 allows attackers to obtain sensitive     information from kernel memory by leveraging the     absence of a certain orphaning     operation.(CVE-2014-0131i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2516-1 advisory.

  - arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1     allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local     users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area     system call and later reads a 16-bit value. (CVE-2014-8133)

  - net/netfilter/nf_conntrack_proto_generic.c in the Linux kernel before 3.18 generates incorrect conntrack     entries during handling of certain iptables rule sets for the SCTP, DCCP, GRE, and UDP-Lite protocols,     which allows remote attackers to bypass intended access restrictions via packets with disallowed port     numbers. (CVE-2014-8160)

  - The d_walk function in fs/dcache.c in the Linux kernel through 3.17.2 does not properly maintain the     semantics of rename_lock, which allows local users to cause a denial of service (deadlock and system hang)     via a crafted application. (CVE-2014-8559)

  - The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in     certain namespace scenarios, which allows local users to bypass intended file permissions by leveraging a     POSIX ACL containing an entry for the group category that is more restrictive than the entry for the other     category, aka a negative groups issue, related to kernel/groups.c, kernel/uid16.c, and     kernel/user_namespace.c. (CVE-2014-8989)

  - The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not     ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which     makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that     reads a TLS base address. (CVE-2014-9419)

  - The rock_continue function in fs/isofs/rock.c in the Linux kernel through 3.18.1 does not restrict the     number of Rock Ridge continuation entries, which allows local users to cause a denial of service (infinite     loop, and system crash or hang) via a crafted iso9660 image. (CVE-2014-9420)

  - The batadv_frag_merge_packets function in net/batman-adv/fragmentation.c in the B.A.T.M.A.N.
    implementation in the Linux kernel through 3.18.1 uses an incorrect length field during a calculation of     an amount of memory, which allows remote attackers to cause a denial of service (mesh-node system crash)     via fragmented packets. (CVE-2014-9428)

  - Race condition in the key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 3.18.2     allows local users to cause a denial of service (memory corruption or panic) or possibly have unspecified     other impact via keyctl commands that trigger access to a key structure member during garbage collection     of a key. (CVE-2014-9529)

  - The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel before 3.18.2 does not     validate a length value in the Extensions Reference (ER) System Use Field, which allows local users to     obtain sensitive information from kernel memory via a crafted iso9660 image. (CVE-2014-9584)

  - The vdso_addr function in arch/x86/vdso/vma.c in the Linux kernel through 3.18.2 does not properly choose     memory locations for the vDSO area, which makes it easier for local users to bypass the ASLR protection     mechanism by guessing a location at the end of a PMD. (CVE-2014-9585)

  - Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs     subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer     overflow and system crash) or possibly gain privileges via a crafted filename. (CVE-2014-9683)

  - The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS     lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of     service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER     instruction. (CVE-2015-0239)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2517-1 advisory.

  - arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1     allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local     users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area     system call and later reads a 16-bit value. (CVE-2014-8133)

  - net/netfilter/nf_conntrack_proto_generic.c in the Linux kernel before 3.18 generates incorrect conntrack     entries during handling of certain iptables rule sets for the SCTP, DCCP, GRE, and UDP-Lite protocols,     which allows remote attackers to bypass intended access restrictions via packets with disallowed port     numbers. (CVE-2014-8160)

  - The d_walk function in fs/dcache.c in the Linux kernel through 3.17.2 does not properly maintain the     semantics of rename_lock, which allows local users to cause a denial of service (deadlock and system hang)     via a crafted application. (CVE-2014-8559)

  - The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in     certain namespace scenarios, which allows local users to bypass intended file permissions by leveraging a     POSIX ACL containing an entry for the group category that is more restrictive than the entry for the other     category, aka a negative groups issue, related to kernel/groups.c, kernel/uid16.c, and     kernel/user_namespace.c. (CVE-2014-8989)

  - The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not     ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which     makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that     reads a TLS base address. (CVE-2014-9419)

  - The rock_continue function in fs/isofs/rock.c in the Linux kernel through 3.18.1 does not restrict the     number of Rock Ridge continuation entries, which allows local users to cause a denial of service (infinite     loop, and system crash or hang) via a crafted iso9660 image. (CVE-2014-9420)

  - The batadv_frag_merge_packets function in net/batman-adv/fragmentation.c in the B.A.T.M.A.N.
    implementation in the Linux kernel through 3.18.1 uses an incorrect length field during a calculation of     an amount of memory, which allows remote attackers to cause a denial of service (mesh-node system crash)     via fragmented packets. (CVE-2014-9428)

  - Race condition in the key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 3.18.2     allows local users to cause a denial of service (memory corruption or panic) or possibly have unspecified     other impact via keyctl commands that trigger access to a key structure member during garbage collection     of a key. (CVE-2014-9529)

  - The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel before 3.18.2 does not     validate a length value in the Extensions Reference (ER) System Use Field, which allows local users to     obtain sensitive information from kernel memory via a crafted iso9660 image. (CVE-2014-9584)

  - The vdso_addr function in arch/x86/vdso/vma.c in the Linux kernel through 3.18.2 does not properly choose     memory locations for the vDSO area, which makes it easier for local users to bypass the ASLR protection     mechanism by guessing a location at the end of a PMD. (CVE-2014-9585)

  - Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs     subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer     overflow and system crash) or possibly gain privileges via a crafted filename. (CVE-2014-9683)

  - The UDF filesystem implementation in the Linux kernel before 3.18.2 does not validate certain lengths,     which allows local users to cause a denial of service (buffer over-read and system crash) via a crafted     filesystem image, related to fs/udf/inode.c and fs/udf/symlink.c. (CVE-2014-9728)

  - The udf_read_inode function in fs/udf/inode.c in the Linux kernel before 3.18.2 does not ensure a certain     data-structure size consistency, which allows local users to cause a denial of service (system crash) via     a crafted UDF filesystem image. (CVE-2014-9729)

  - The udf_pc_to_char function in fs/udf/symlink.c in the Linux kernel before 3.18.2 relies on component     lengths that are unused, which allows local users to cause a denial of service (system crash) via a     crafted UDF filesystem image. (CVE-2014-9730)

  - The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is     available for storing a symlink target's name along with a trailing \0 character, which allows local users     to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and     fs/udf/unicode.c. (CVE-2014-9731)

  - The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS     lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of     service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER     instruction. (CVE-2015-0239)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

USN-2515-1 fixed vulnerabilities in the Linux kernel. There was an unrelated regression in the use of the virtual counter (CNTVCT) on arm64 architectures. This update fixes the problem.

We apologize for the inconvenience.

A flaw was discovered in the Kernel Virtual Machine's (KVM) emulation of the SYSTENTER instruction when the guest OS does not initialize the SYSENTER MSRs. A guest OS user could exploit this flaw to cause a denial of service of the guest OS (crash) or potentially gain privileges on the guest OS. (CVE-2015-0239)

Andy Lutomirski discovered an information leak in the Linux kernel's Thread Local Storage (TLS) implementation allowing users to bypass the espfix to obtain information that could be used to bypass the Address Space Layout Randomization (ASLR) protection mechanism. A local user could exploit this flaw to obtain potentially sensitive information from kernel memory. (CVE-2014-8133)

A restriction bypass was discovered in iptables when conntrack rules are specified and the conntrack protocol handler module is not loaded into the Linux kernel. This flaw can cause the firewall rules on the system to be bypassed when conntrack rules are used. (CVE-2014-8160)

A flaw was discovered with file renaming in the linux kernel. A local user could exploit this flaw to cause a denial of service (deadlock and system hang). (CVE-2014-8559)

A flaw was discovered in how supplemental group memberships are handled in certain namespace scenarios. A local user could exploit this flaw to bypass file permission restrictions. (CVE-2014-8989)

A flaw was discovered in how Thread Local Storage (TLS) is handled by the task switching function in the Linux kernel for x86_64 based machines. A local user could exploit this flaw to bypass the Address Space Layout Radomization (ASLR) protection mechanism. (CVE-2014-9419)

Prasad J Pandit reported a flaw in the rock_continue function of the Linux kernel's ISO 9660 CDROM file system. A local user could exploit this flaw to cause a denial of service (system crash or hang).
(CVE-2014-9420)

A flaw was discovered in the fragment handling of the B.A.T.M.A.N.
Advanced Meshing Protocol in the Linux kernel. A remote attacker could exploit this flaw to cause a denial of service (mesh-node system crash) via fragmented packets. (CVE-2014-9428)

A race condition was discovered in the Linux kernel's key ring. A local user could cause a denial of service (memory corruption or panic) or possibly have unspecified impact via the keyctl commands.
(CVE-2014-9529)

A memory leak was discovered in the ISO 9660 CDROM file system when parsing rock ridge ER records. A local user could exploit this flaw to obtain sensitive information from kernel memory via a crafted iso9660 image. (CVE-2014-9584)

A flaw was discovered in the Address Space Layout Randomization (ASLR) of the Virtual Dynamically linked Shared Objects (vDSO) location. This flaw makes it easier for a local user to bypass the ASLR protection mechanism. (CVE-2014-9585)

Dmitry Chernenkov discovered a buffer overflow in eCryptfs' encrypted file name decoding. A local unprivileged user could exploit this flaw to cause a denial of service (system crash) or potentially gain administrative privileges. (CVE-2014-9683).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-2516-3 advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

A flaw was discovered in the Kernel Virtual Machine's (KVM) emulation of the SYSTENTER instruction when the guest OS does not initialize the SYSENTER MSRs. A guest OS user could exploit this flaw to cause a denial of service of the guest OS (crash) or potentially gain privileges on the guest OS. (CVE-2015-0239)

Andy Lutomirski discovered an information leak in the Linux kernel's Thread Local Storage (TLS) implementation allowing users to bypass the espfix to obtain information that could be used to bypass the Address Space Layout Randomization (ASLR) protection mechanism. A local user could exploit this flaw to obtain potentially sensitive information from kernel memory. (CVE-2014-8133)

A restriction bypass was discovered in iptables when conntrack rules are specified and the conntrack protocol handler module is not loaded into the Linux kernel. This flaw can cause the firewall rules on the system to be bypassed when conntrack rules are used. (CVE-2014-8160)

A flaw was discovered with file renaming in the linux kernel. A local user could exploit this flaw to cause a denial of service (deadlock and system hang). (CVE-2014-8559)

A flaw was discovered in how supplemental group memberships are handled in certain namespace scenarios. A local user could exploit this flaw to bypass file permission restrictions. (CVE-2014-8989)

A flaw was discovered in how Thread Local Storage (TLS) is handled by the task switching function in the Linux kernel for x86_64 based machines. A local user could exploit this flaw to bypass the Address Space Layout Radomization (ASLR) protection mechanism. (CVE-2014-9419)

Prasad J Pandit reported a flaw in the rock_continue function of the Linux kernel's ISO 9660 CDROM file system. A local user could exploit this flaw to cause a denial of service (system crash or hang).
(CVE-2014-9420)

A flaw was discovered in the fragment handling of the B.A.T.M.A.N.
Advanced Meshing Protocol in the Linux kernel. A remote attacker could exploit this flaw to cause a denial of service (mesh-node system crash) via fragmented packets. (CVE-2014-9428)

A race condition was discovered in the Linux kernel's key ring. A local user could cause a denial of service (memory corruption or panic) or possibly have unspecified impact via the keyctl commands.
(CVE-2014-9529)

A memory leak was discovered in the ISO 9660 CDROM file system when parsing rock ridge ER records. A local user could exploit this flaw to obtain sensitive information from kernel memory via a crafted iso9660 image. (CVE-2014-9584)

A flaw was discovered in the Address Space Layout Randomization (ASLR) of the Virtual Dynamically linked Shared Objects (vDSO) location. This flaw makes it easier for a local user to bypass the ASLR protection mechanism. (CVE-2014-9585)

Dmitry Chernenkov discovered a buffer overflow in eCryptfs' encrypted file name decoding. A local unprivileged user could exploit this flaw to cause a denial of service (system crash) or potentially gain administrative privileges. (CVE-2014-9683).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-2516-2 advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux kernel was updated to fix bugs and security issues :

Following security issues were fixed: CVE-2015-2830: A flaw was found in the way the Linux kernels 32-bit emulation implementation handled forking or closing of a task with an int80 entry. A local user could have potentially used this flaw to escalate their privileges on the system.

CVE-2015-2042: A kernel information leak in rds sysctl files was fixed.

CVE-2014-9683: Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs subsystem in the Linux kernel allowed local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted filename.

CVE-2015-0275: A BUG_ON in ext4 was fixed which could be triggered by local users.

CVE-2015-2666: A buffer overflow when loading microcode files into the kernel could be used by the administrator to execute code in the kernel, bypassing secure boot measures.

  - CVE-2015-1421: Use-after-free vulnerability in the     sctp_assoc_update function in net/sctp/associola.c in     the Linux kernel allowed remote attackers to cause a     denial of service (slab corruption and panic) or     possibly have unspecified other impact by triggering an     INIT collision that leads to improper handling of     shared-key data.

  - CVE-2015-2150: XSA-120: Guests were permitted to modify     all bits of the PCI command register of passed through     cards, which could lead to Host system crashes.

  - CVE-2015-0777: The XEN usb backend could leak     information to the guest system due to copying     uninitialized memory.

  - CVE-2015-1593: A integer overflow reduced the     effectiveness of the stack randomization on 64-bit     systems.

  - CVE-2014-9419: The __switch_to function in     arch/x86/kernel/process_64.c in the Linux kernel did not     ensure that Thread Local Storage (TLS) descriptors are     loaded before proceeding with other steps, which made it     easier for local users to bypass the ASLR protection     mechanism via a crafted application that reads a TLS     base address.

  - CVE-2014-9428: The batadv_frag_merge_packets function in     net/batman-adv/fragmentation.c in the B.A.T.M.A.N.
    implementation in the Linux kernel used an incorrect     length field during a calculation of an amount of     memory, which allowed remote attackers to cause a denial     of service (mesh-node system crash) via fragmented     packets.

  - CVE-2014-8160:
    net/netfilter/nf_conntrack_proto_generic.c in the Linux     kernel generated incorrect conntrack entries during     handling of certain iptables rule sets for the SCTP,     DCCP, GRE, and UDP-Lite protocols, which allowed remote     attackers to bypass intended access restrictions via     packets with disallowed port numbers.

  - CVE-2014-9529: Race condition in the key_gc_unused_keys     function in security/keys/gc.c in the Linux kernel     allowed local users to cause a denial of service (memory     corruption or panic) or possibly have unspecified other     impact via keyctl commands that trigger access to a key     structure member during garbage collection of a key.

  - CVE-2014-9420: The rock_continue function in     fs/isofs/rock.c in the Linux kernel did not restrict the     number of Rock Ridge continuation entries, which allowed     local users to cause a denial of service (infinite loop,     and system crash or hang) via a crafted iso9660 image.

  - CVE-2014-9584: The parse_rock_ridge_inode_internal     function in fs/isofs/rock.c in the Linux kernel did not     validate a length value in the Extensions Reference (ER)     System Use Field, which allowed local users to obtain     sensitive information from kernel memory via a crafted     iso9660 image.

  - CVE-2014-9585: The vdso_addr function in     arch/x86/vdso/vma.c in the Linux kernel did not properly     choose memory locations for the vDSO area, which made it     easier for local users to bypass the ASLR protection     mechanism by guessing a location at the end of a PMD.

  - CVE-2014-8559: The d_walk function in fs/dcache.c in the     Linux kernel through did not properly maintain the     semantics of rename_lock, which allowed local users to     cause a denial of service (deadlock and system hang) via     a crafted application.

  - CVE-2014-8134: The paravirt_ops_setup function in     arch/x86/kernel/kvm.c in the Linux kernel used an     improper paravirt_enabled setting for KVM guest kernels,     which made it easier for guest OS users to bypass the     ASLR protection mechanism via a crafted application that     reads a 16-bit value.

Following bugs were fixed :

  - powerpc/pci: Fix IO space breakage after     of_pci_range_to_resource() change (bnc#922542).

  - cifs: fix use-after-free bug in find_writable_file     (bnc#909477).

  - usb: Do not allow usb_alloc_streams on unconfigured     devices (bsc#920581).

  - fuse: honour max_read and max_write in direct_io mode     (bnc#918954).

  - switch iov_iter_get_pages() to passing maximal number of     pages (bnc#918954).

  - bcache: fix a livelock in btree lock v2 (bnc#910440)     (bnc#910440). Updated because another version went     upstream

  - drm/i915: Initialise userptr mmu_notifier serial to 1     (bnc#918970).

  - NFS: Don't try to reclaim delegation open state if     recovery failed (boo#909634).

  - NFSv4: Ensure that we call FREE_STATEID when NFSv4.x     stateids are revoked (boo#909634).

  - NFSv4: Fix races between nfs_remove_bad_delegation() and     delegation return (boo#909634).

  - NFSv4: Ensure that we remove NFSv4.0 delegations when     state has expired (boo#909634).

  - Fixing lease renewal (boo#909634).

  - bcache: Fix a bug when detaching (bsc#908582).

  - fix a leak in bch_cached_dev_run() (bnc#910440).

  - bcache: unregister reboot notifier when bcache fails to     register a block device (bnc#910440).

  - bcache: fix a livelock in btree lock (bnc#910440).

  - bcache: [BUG] clear BCACHE_DEV_UNLINK_DONE flag when     attaching a backing device (bnc#910440).

  - bcache: Add a cond_resched() call to gc (bnc#910440).

  - storvsc: ring buffer failures may result in I/O freeze     (bnc#914175).

  - ALSA: seq-dummy: remove deadlock-causing events on close     (boo#916608).

  - ALSA: pcm: Zero-clear reserved fields of PCM status     ioctl in compat mode (boo#916608).

  - ALSA: bebob: Uninitialized id returned by     saffirepro_both_clk_src_get (boo#916608).

  - ALSA: hda - Fix built-in mic on Compaq Presario CQ60     (bnc#920604).

  - ALSA: hda - Fix regression of HD-audio controller     fallback modes (bsc#921313).

  - [media] sound: Update au0828 quirks table (boo#916608).

  - [media] sound: simplify au0828 quirk table (boo#916608).

  - ALSA: usb-audio: Add mic volume fix quirk for Logitech     Webcam C210 (boo#916608).

  - ALSA: usb-audio: extend KEF X300A FU 10 tweak to Arcam     rPAC (boo#916608).

  - ALSA: usb-audio: Add ctrl message delay quirk for     Marantz/Denon devices (boo#916608).

  - ALSA: usb-audio: Fix memory leak in FTU quirk     (boo#916608).

  - ALSA: usb-audio: Fix device_del() sysfs warnings at     disconnect (boo#916608).

  - ALSA: hda - Add new GPU codec ID 0x10de0072 to snd-hda     (boo#916608).

  - ALSA: hda - Fix wrong gpio_dir & gpio_mask hint setups     for IDT/STAC codecs (boo#916608).

  - ALSA: hda/realtek - New codec support for ALC298     (boo#916608).

  - ALSA: hda/realtek - New codec support for ALC256     (boo#916608).

  - ALSA: hda/realtek - Add new Dell desktop for ALC3234     headset mode (boo#916608).

  - ALSA: hda - Add EAPD fixup for ASUS Z99He laptop     (boo#916608).

  - ALSA: hda - Fix built-in mic at resume on Lenovo Ideapad     S210 (boo#916608).

  - ALSA: hda/realtek - Add headset Mic support for new Dell     machine (boo#916608).

  - ALSA: hda_intel: Add DeviceIDs for Sunrise Point-LP     (boo#916608).

  - ALSA: hda_intel: Add Device IDs for Intel Sunrise Point     PCH (boo#916608).

  - ALSA: hda - add codec ID for Braswell display audio     codec (boo#916608).

  - ALSA: hda - add PCI IDs for Intel Braswell (boo#916608).

  - ALSA: hda - Add dock support for Thinkpad T440     (17aa:2212) (boo#916608).

  - ALSA: hda - Set up GPIO for Toshiba Satellite S50D     (bnc#915858).

  - rpm/kernel-binary.spec.in: Fix build if there is no
    *.crt file

  - mm, vmscan: prevent kswapd livelock due to     pfmemalloc-throttled process being killed (VM     Functionality bnc#910150).

  - Input: evdev - fix EVIOCG(type) ioctl (bnc#904899).

  - mnt: Implicitly add MNT_NODEV on remount when it was     implicitly added by mount (bsc#907988).

  - Btrfs: fix scrub race leading to use-after-free     (bnc#915456).

  - Btrfs: fix setup_leaf_for_split() to avoid leaf     corruption (bnc#915454).

  - Btrfs: fix fsync log replay for inodes with a mix of     regular refs and extrefs (bnc#915425).

  - Btrfs: fix fsync when extend references are added to an     inode (bnc#915425).

  - Btrfs: fix directory inconsistency after fsync log     replay (bnc#915425).

  - Btrfs: make xattr replace operations atomic     (bnc#913466).

  - Btrfs: fix directory recovery from fsync log     (bnc#895797).

  - Btrfs: simplify insert_orphan_item (boo#926385).

  - Btrfs: set proper message level for skinny metadata.

  - Btrfs: make sure we wait on logged extents when fsycning     two subvols.

  - Btrfs: fix lost return value due to variable shadowing.

  - Btrfs: fix leak of path in btrfs_find_item.

  - Btrfs: fix fsync data loss after adding hard link to     inode.

  - Btrfs: fix fs corruption on transaction abort if device     supports discard.

  - Btrfs: fix data loss in the fast fsync path.

  - Btrfs: don't delay inode ref updates during log replay.

  - Btrfs: do not move em to modified list when unpinning.

  - Btrfs:__add_inode_ref: out of bounds memory read when     looking for extended ref.

  - Btrfs: fix inode eviction infinite loop after cloning     into it (boo#905088).

  - bcache: add mutex lock for bch_is_open (bnc#908612).

  - bcache: Correct printing of btree_gc_max_duration_ms     (bnc#908610).

  - bcache: fix crash with incomplete cache set     (bnc#908608).

  - bcache: fix memory corruption in init error path     (bnc#908606).

  - bcache: Fix more early shutdown bugs (bnc#908605).

  - bcache: fix use-after-free in btree_gc_coalesce()     (bnc#908604).

  - bcache: Fix an infinite loop in journal replay     (bnc#908603).

  - bcache: fix typo in bch_bkey_equal_header (bnc#908598).

  - bcache: Make sure to pass GFP_WAIT to mempool_alloc()     (bnc#908596).

  - bcache: fix crash on shutdown in passthrough mode     (bnc#908594).

  - bcache: fix lockdep warnings on shutdown (bnc#908593).

  - bcache allocator: send discards with correct size     (bnc#908592).

  - bcache: Fix to remove the rcu_sched stalls (bnc#908589).

  - bcache: Fix a journal replay bug (bnc#908588).

  - Update x86_64 config files: CONFIG_SENSORS_NCT6683=m The     nct6683 driver is already enabled on i386 and history     suggests that it not being enabled on x86_64 is by     mistake.

  - rpm/kernel-binary.spec.in: Own the modules directory in     the devel package (bnc#910322)

  - Revert 'iwlwifi: mvm: treat EAPOLs like mgmt frames wrt     rate' (bnc#900811).

  - mm: free compound page with correct order (bnc#913695).

  - drm/i915: More cautious with pch fifo underruns     (boo#907039).

  - Refresh patches.arch/arm64-0039-generic-pci.patch (fix     PCI bridge support)

  - x86/microcode/intel: Fish out the stashed microcode for     the BSP (bsc#903589).

  - x86, microcode: Reload microcode on resume (bsc#903589).

  - x86, microcode: Don't initialize microcode code on     paravirt (bsc#903589).

  - x86, microcode, intel: Drop unused parameter     (bsc#903589).

  - x86, microcode, AMD: Do not use smp_processor_id() in     preemtible context (bsc#903589).

  - x86, microcode: Update BSPs microcode on resume     (bsc#903589).

  - x86, microcode, AMD: Fix ucode patch stashing on 32-bit     (bsc#903589).

  - x86, microcode: Fix accessing dis_ucode_ldr on 32-bit     (bsc#903589).

  - x86, microcode, AMD: Fix early ucode loading on 32-bit     (bsc#903589).

  - Bluetooth: Add support for Broadcom BCM20702A0 variants     firmware download (bnc#911311).

  - drm/radeon: fix sad_count check for dce3 (bnc#911356).

  - drm/i915: Don't call intel_prepare_page_flip() multiple     times on gen2-4 (bnc#911835).

  - udf: Check component length before reading it.

  - udf: Check path length when reading symlink.

  - udf: Verify symlink size before loading it.

  - udf: Verify i_size when loading inode.

  - arm64: Enable DRM

  - arm64: Enable generic PHB driver (bnc#912061).

  - ACPI / video: Add some Samsung models to     disable_native_backlight list (boo#905681).

  - asus-nb-wmi: Add another wapf=4 quirk (boo#911438).

  - asus-nb-wmi: Add wapf4 quirk for the X550VB     (boo#911438).

  - asus-nb-wmi: Add wapf4 quirk for the U32U (boo#911438).

  - asus-nb-wmi: Add wapf4 quirk for the X550CC     (boo#911438).

  - asus-nb-wmi: Constify asus_quirks DMI table     (boo#911438).

  - asus-nb-wmi: Add wapf4 quirk for the X550CL     (boo#911438).

  - asus-nb-wmi.c: Rename x401u quirk to wapf4 (boo#911438).

  - asus-nb-wmi: Add ASUSTeK COMPUTER INC. X200CA     (boo#911438).

  - WAPF 4 for ASUSTeK COMPUTER INC. X75VBP WLAN ON     (boo#911438).

  - Input: synaptics - gate forcepad support by DMI check     (bnc#911578).

  - ext4: introduce aging to extent status tree     (bnc#893428).

  - ext4: cleanup flag definitions for extent status tree     (bnc#893428).

  - ext4: limit number of scanned extents in status tree     shrinker (bnc#893428).

  - ext4: move handling of list of shrinkable inodes into     extent status code (bnc#893428).

  - ext4: change LRU to round-robin in extent status tree     shrinker (bnc#893428).

  - ext4: cache extent hole in extent status tree for     ext4_da_map_blocks() (bnc#893428).

  - ext4: fix block reservation for bigalloc filesystems     (bnc#893428).

  - ext4: track extent status tree shrinker delay statictics     (bnc#893428).

  - ext4: improve extents status tree trace point     (bnc#893428).

  - rpm/kernel-binary.spec.in: Provide name-version-release     for kgraft packages (bnc#901925)

  - rpm/kernel-binary.spec.in: Fix including the secure boot     cert in /etc/uefi/certs

  - doc/README.SUSE: update Solid Driver team contacts

  - rpm/kernel-binary.spec.in: Do not sign firmware files     (bnc#867199)

  - Port module signing changes from SLE11-SP3 (fate#314508)

  - doc/README.PATCH-POLICY.SUSE: add patch policy / best     practices document after installation.

  - Update config files. (boo#925479) Do not set     CONFIG_SYSTEM_TRUSTED_KEYRING until we need it in future     openSUSE version: e.g. MODULE_SIG, IMA, PKCS7(new),     KEXEC_BZIMAGE_VERIFY_SIG(new)

  - Input: xpad - use proper endpoint type (bnc#926397).

  - md: don't require sync_min to be a multiple of     chunk_size (bnc#910500).

ID	Name	Product	Family	Published	Updated	Severity
80452	Fedora 21 : kernel-3.17.8-300.fc21 (2015-0517)	Nessus	Fedora Local Security Checks	1/12/2015	1/11/2021	high
81941	Mandriva Linux Security Advisory : kernel (MDVSA-2015:058)	Nessus	Mandriva Local Security Checks	3/19/2015	1/6/2021	high
124980	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1527)	Nessus	Huawei Local Security Checks	5/14/2019	2/8/2021	critical
81569	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2516-1)	Nessus	Ubuntu Local Security Checks	2/27/2015	1/9/2024	medium
81570	Ubuntu 14.04 LTS : Linux kernel (Utopic HWE) vulnerabilities (USN-2517-1)	Nessus	Ubuntu Local Security Checks	2/27/2015	1/9/2024	medium
80465	Fedora 20 : kernel-3.17.8-200.fc20 (2015-0515)	Nessus	Fedora Local Security Checks	1/13/2015	1/11/2021	high
81645	Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2515-2)	Nessus	Ubuntu Local Security Checks	3/5/2015	1/19/2021	medium
81646	Ubuntu 14.04 LTS : Linux kernel vulnerabilities regression (USN-2516-3)	Nessus	Ubuntu Local Security Checks	3/5/2015	1/9/2024	medium
81568	Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2515-1)	Nessus	Ubuntu Local Security Checks	2/27/2015	1/19/2021	medium
81571	Ubuntu 14.10 : linux vulnerabilities (USN-2518-1)	Nessus	Ubuntu Local Security Checks	2/27/2015	1/19/2021	medium
81590	Ubuntu 14.04 LTS : Linux kernel vulnerability regression (USN-2516-2)	Nessus	Ubuntu Local Security Checks	3/2/2015	1/9/2024	medium
82756	openSUSE Security Update : Linux Kernel (openSUSE-2015-302)	Nessus	SuSE Local Security Checks	4/14/2015	1/19/2021	critical

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