In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfs_mdt_destroy In alloc_inode, inode_init_always() could return -ENOMEM if security_inode_alloc() fails, which causes inode->i_private uninitialized. Then nilfs_is_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(), which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF). Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - fs: fix UAF/GPF bug in nilfs_mdt_destroy In alloc_inode, inode_init_always() could return -ENOMEM if     security_inode_alloc() fails, which causes inode->i_private uninitialized. Then     nilfs_is_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(),     which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF). Fix this by moving     security_inode_alloc just prior to this_cpu_inc(nr_inodes) (CVE-2022-50367)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of kernel installed on the remote host is prior to 4.14.296-222.539. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1876 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    inet: fully convert sk->sk_rx_dst to RCU rules (CVE-2021-47103)

    A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function     security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use     this flaw to crash the system or potentially escalate their privileges on the system. (CVE-2022-2978)

    A vulnerability classified as problematic was found in Linux Kernel. This vulnerability affects the     function bnx2x_tpa_stop of the file drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c of the component BPF.
    The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. VDB-211042 is     the identifier assigned to this vulnerability. (CVE-2022-3542)

    A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue     is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The     manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier     of this vulnerability is VDB-211088. (CVE-2022-3565)

    A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The     manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to     apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.
    (CVE-2022-3594)

    A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is the function     nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. The manipulation leads     to null pointer dereference. It is possible to launch the attack remotely. It is recommended to apply a     patch to fix this issue. The identifier of this vulnerability is VDB-211920. (CVE-2022-3621)

    A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects     the function nilfs_attach_log_writer of the file fs/nilfs2/segment.c of the component BPF. The     manipulation leads to memory leak. The attack may be initiated remotely. It is recommended to apply a     patch to fix this issue. The identifier VDB-211961 was assigned to this vulnerability. (CVE-2022-3646)

    A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is the function     nilfs_new_inode of the file fs/nilfs2/inode.c of the component BPF. The manipulation leads to use after     free. It is possible to launch the attack remotely. It is recommended to apply a patch to fix this issue.
    The identifier of this vulnerability is VDB-211992. (CVE-2022-3649)

    An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in     drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an     integer overflow and bypassing the size check. After that, because it is used as the third argument to     copy_from_user(), a heap overflow may occur. (CVE-2022-39842)

    drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to obtain sensitive information     from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.
    (CVE-2022-40768)

    drivers/video/fbdev/smscufx.c in the Linux kernel through 5.19.12 has a race condition and resultant use-     after-free if a physically proximate attacker removes a USB device while calling open(), aka a race     condition between ufx_ops_open and ufx_usb_disconnect. (CVE-2022-41849)

    roccat_report_event in drivers/hid/hid-roccat.c in the Linux kernel through 5.19.12 has a race condition     and resultant use-after-free in certain situations where a report is received while copying a     report->value is in progress. (CVE-2022-41850)

    drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-     space client to corrupt the monitor's internal memory. (CVE-2022-43750)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ebtables: fix memory leak when blob is malformed (CVE-2022-48641)

    In the Linux kernel, the following vulnerability has been resolved: ipvlan: Fix out-of-bound bugs caused     by unset skb->mac_header If an AF_PACKET socket is used to send packets through ipvlan and the default     xmit function of the AF_PACKET socket is changed from dev_queue_xmit() to packet_direct_xmit() via     setsockopt() with the option name of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset and remains     as the initial value of 65535, this may trigger slab-out-of-bounds bugs as following: (CVE-2022-48651)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/slub: fix to return errno if kmalloc() fails (CVE-2022-48659)

    In the Linux kernel, the following vulnerability has been resolved:

    of: fdt: fix off-by-one error in unflatten_dt_nodes() (CVE-2022-48672)

    In the Linux kernel, the following vulnerability has been resolved:

    vhost/vsock: Use kvmalloc/kvfree for larger packets. (CVE-2022-50271)

    In the Linux kernel, the following vulnerability has been resolved:

    md: Replace snprintf with scnprintf (CVE-2022-50299)

    In the Linux kernel, the following vulnerability has been resolved:

    nbd: Fix hung when signal interrupts nbd_start_device_ioctl() (CVE-2022-50314)

    In the Linux kernel, the following vulnerability has been resolved:

    crypto: cavium - prevent integer overflow loading firmware (CVE-2022-50330)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix null-ptr-deref in ext4_write_info (CVE-2022-50344)

    In the Linux kernel, the following vulnerability has been resolved:

    fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)

    In the Linux kernel, the following vulnerability has been resolved:

    Bluetooth: L2CAP: Fix user-after-free (CVE-2022-50386)

    In the Linux kernel, the following vulnerability has been resolved:

    net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory (CVE-2022-50409)

    In the Linux kernel, the following vulnerability has been resolved:

    Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times (CVE-2022-50419)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: avoid crash when inline data creation follows DIO write (CVE-2022-50435)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The version of kernel installed on the remote host is prior to 5.4.219-126.410. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2022-038 advisory.

    A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function     security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use     this flaw to crash the system or potentially escalate their privileges on the system. (CVE-2022-2978)

    A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is the function     nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. The manipulation leads     to null pointer dereference. It is possible to launch the attack remotely. It is recommended to apply a     patch to fix this issue. The identifier of this vulnerability is VDB-211920. (CVE-2022-3621)

    A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects     the function nilfs_attach_log_writer of the file fs/nilfs2/segment.c of the component BPF. The     manipulation leads to memory leak. The attack may be initiated remotely. It is recommended to apply a     patch to fix this issue. The identifier VDB-211961 was assigned to this vulnerability. (CVE-2022-3646)

    drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to obtain sensitive information     from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.
    (CVE-2022-40768)

    drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-     space client to corrupt the monitor's internal memory. (CVE-2022-43750)

    In the Linux kernel, the following vulnerability has been resolved:

    fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The version of kernel installed on the remote host is prior to 5.10.149-133.644. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-022 advisory.

    A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function     security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use     this flaw to crash the system or potentially escalate their privileges on the system. (CVE-2022-2978)

    A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is the function     nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. The manipulation leads     to null pointer dereference. It is possible to launch the attack remotely. It is recommended to apply a     patch to fix this issue. The identifier of this vulnerability is VDB-211920. (CVE-2022-3621)

    A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects     the function nilfs_attach_log_writer of the file fs/nilfs2/segment.c of the component BPF. The     manipulation leads to memory leak. The attack may be initiated remotely. It is recommended to apply a     patch to fix this issue. The identifier VDB-211961 was assigned to this vulnerability. (CVE-2022-3646)

    A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is the function     nilfs_new_inode of the file fs/nilfs2/inode.c of the component BPF. The manipulation leads to use after     free. It is possible to launch the attack remotely. It is recommended to apply a patch to fix this issue.
    The identifier of this vulnerability is VDB-211992. (CVE-2022-3649)

    drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to obtain sensitive information     from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.
    (CVE-2022-40768)

    drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-     space client to corrupt the monitor's internal memory. (CVE-2022-43750)

    In the Linux kernel, the following vulnerability has been resolved:

    fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The version of kernel installed on the remote host is prior to 5.15.73-48.135. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2022-009 advisory.

    A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root     (host) user-level application to crash the host kernel by creating a confidential guest VM instance in AMD     CPU that supports Secure Encrypted Virtualization (SEV). (CVE-2022-0171)

    A flaw was found in the Linux kernel in vDPA with VDUSE backend. There were no checks in VDUSE kernel     driver to ensure the size of the device config space was in line with the features advertised by the VDUSE     userspace application. In case of a mismatch, Virtio drivers config read helpers did not initialize the     memory indirectly passed to vduse_vdpa_get_config() returning uninitialized memory from the stack. Such     memory was not directly propagated to userspace, although under some circumstances it could be printed in     the kernel logs. (CVE-2022-2308)

    A use-after-free flaw was found in the Linux kernel's Unix socket Garbage Collection and io_uring. This     flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-2602)

    A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function     security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use     this flaw to crash the system or potentially escalate their privileges on the system. (CVE-2022-2978)

    Found Linux Kernel flaw in the i740 driver. The Userspace program could pass any values to the driver     through ioctl() interface. The driver doesn't check the value of 'pixclock', so it may cause a divide by     zero error. (CVE-2022-3061)

    An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in     drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an     integer overflow and bypassing the size check. After that, because it is used as the third argument to     copy_from_user(), a heap overflow may occur. (CVE-2022-39842)

    This vulnerability allows local attackers to disclose sensitive information on affected installations of     the Linux Kernel 6.0-rc2. An attacker must first obtain the ability to execute high-privileged code on the     target system in order to exploit this vulnerability. The specific flaw exists within the nft_osf_eval     function. The issue results from the lack of proper initialization of memory prior to accessing it. An     attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the     context of the kernel. Was ZDI-CAN-18540. (CVE-2022-42432)

    drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-     space client to corrupt the monitor's internal memory. (CVE-2022-43750)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix bug in extents parsing when eh_entries == 0 and eh_depth > 0 (CVE-2022-48631)

    In the Linux kernel, the following vulnerability has been resolved:

    cgroup: cgroup_get_from_id() must check the looked-up kn is a directory (CVE-2022-48638)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: fix possible refcount leak in tc_new_tfilter() (CVE-2022-48639)

    In the Linux kernel, the following vulnerability has been resolved:

    bonding: fix NULL deref in bond_rr_gen_slave_id (CVE-2022-48640)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ebtables: fix memory leak when blob is malformed (CVE-2022-48641)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain() (CVE-2022-48642)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() (CVE-2022-48643)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: taprio: avoid disabling offload when it was never enabled (CVE-2022-48644)

    In the Linux kernel, the following vulnerability has been resolved: ipvlan: Fix out-of-bound bugs caused     by unset skb->mac_header If an AF_PACKET socket is used to send packets through ipvlan and the default     xmit function of the AF_PACKET socket is changed from dev_queue_xmit() to packet_direct_xmit() via     setsockopt() with the option name of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset and remains     as the initial value of 65535, this may trigger slab-out-of-bounds bugs as following: (CVE-2022-48651)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find() (CVE-2022-48654)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64: topology: fix possible overflow in amu_fie_setup() (CVE-2022-48657)

    In the Linux kernel, the following vulnerability has been resolved: mm: slub: fix     flush_cpu_slab()/__free_slab() invocations in task context. Commit 5a836bf6b09f (mm: slub: move     flush_cpu_slab() invocations __free_slab() invocations out of IRQ context) moved all flush_cpu_slab()     invocations to the global workqueue to avoid a problem related with deactivate_slab()/__free_slab() being     called from an IRQ context on PREEMPT_RT kernels. (CVE-2022-48658)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/slub: fix to return errno if kmalloc() fails (CVE-2022-48659)

    In the Linux kernel, the following vulnerability has been resolved:

    gpiolib: cdev: Set lineevent_state::irq after IRQ register successfully (CVE-2022-48660)

    In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Really move     i915_gem_context.link under ref protection i915_perf assumes that it can use the i915_gem_context     reference to protect its i915->gem.contexts.list iteration. However, this requires that we do not remove     the context from the list until after we drop the final reference and release the struct. If, as     currently, we remove the context from the list during context_close(), the link.next pointer may be     poisoned while we are holding the context reference and cause a GPF (CVE-2022-48662)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix hang during unmount when stopping a space reclaim worker (CVE-2022-48664)

    In the Linux kernel, the following vulnerability has been resolved:

    cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all() (CVE-2022-48671)

    In the Linux kernel, the following vulnerability has been resolved:

    of: fdt: fix off-by-one error in unflatten_dt_nodes() (CVE-2022-48672)

    In the Linux kernel, the following vulnerability has been resolved:

    io_uring/af_unix: defer registered files gc to io_uring release (CVE-2022-50234)

    In the Linux kernel, the following vulnerability has been resolved:

    fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

An update of the linux package has been released.

ID	Name	Product	Family	Severity
265645	Linux Distros Unpatched Vulnerability : CVE-2022-50367	Nessus	Misc.	medium
168366	Amazon Linux 2 : kernel, --advisory ALAS2-2022-1876 (ALAS-2022-1876)	Nessus	Amazon Linux Local Security Checks	high
167232	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2022-038 (ALASKERNEL-5.4-2022-038)	Nessus	Amazon Linux Local Security Checks	high
167231	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-022 (ALASKERNEL-5.10-2022-022)	Nessus	Amazon Linux Local Security Checks	high
166501	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2022-009 (ALASKERNEL-5.15-2022-009)	Nessus	Amazon Linux Local Security Checks	high
153035	Photon OS 4.0: Linux PHSA-2021-4.0-0095	Nessus	PhotonOS Local Security Checks	high

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