In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption. This construct is necessary to clean the remainder of the register in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does. The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added. Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).

The version of kernel installed on the remote host is prior to 4.14.343-183.564. It is, therefore, affected by a vulnerability as referenced in the ALAS-2024-1937 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix     4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination     array which leads to stack corruption. This construct is necessary to clean the remainder of the register     in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does.
    The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added.
    Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).
    (CVE-2023-52628)

Note that Nessus has not tested for this issue 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 5.10.198-187.748. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2023-042 advisory.

  - An issue was discovered in drivers/mtd/ubi/cdev.c in the Linux kernel 6.2. There is a divide-by-zero error     in do_div(sz,mtd->erasesize), used indirectly by ctrl_cdev_ioctl, when mtd->erasesize is 0.
    (CVE-2023-31085)

  - Closing of an event channel in the Linux kernel can result in a deadlock. This happens when the close is     being performed in parallel to an unrelated Xen console action and the handling of a Xen console interrupt     in an unprivileged guest. The closing of an event channel is e.g. triggered by removal of a paravirtual     device on the other side. As this action will cause console messages to be issued on the other side quite     often, the chance of triggering the deadlock is not neglectable. Note that 32-bit Arm-guests are not     affected, as the 32-bit Linux kernel on Arm doesn't use queued-RW-locks, which are required to trigger the     issue (on Arm32 a waiting writer doesn't block further readers to get the lock). (CVE-2023-34324)

  - A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to     achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane     transaction and nft_set element garbage collection, it is possible to underflow the reference counter     causing a use-after-free vulnerability. We recommend upgrading past commit     3e91b0ebd994635df2346353322ac51ce84ce6d8. (CVE-2023-4244)

  - A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer (skb) was     assumed to be associated with a device before calling __ip_options_compile, which is not always the case     if the skb is re-routed by ipvs. This issue may allow a local user with CAP_NET_ADMIN privileges to crash     the system. (CVE-2023-42754)

  - Rejected reason: CVE-2023-4881 was wrongly assigned to a bug that was deemed to be a non-security issue by     the Linux kernel security team. (CVE-2023-4881)

  - In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: skip sync     GC for new elements in this transaction New elements in this transaction might expired before such     transaction ends. Skip sync GC for such elements otherwise commit path might walk over an already released     object. Once transaction is finished, async GC will collect such expired element. (CVE-2023-52433)

  - In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix     4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination     array which leads to stack corruption. This construct is necessary to clean the remainder of the register     in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does.
    The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added.
    Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).
    (CVE-2023-52628)

  - A denial of service vulnerability was found in tipc_crypto_key_revoke in net/tipc/crypto.c in the Linux     kernel's TIPC subsystem. This flaw allows guests with local user privileges to trigger a deadlock and     potentially crash the system. (CVE-2024-0641)

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 5.15.133-86.144. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-027 advisory.

  - A flaw was found in the Netfilter subsystem in the Linux kernel. The xt_u32 module did not validate the     fields in the xt_u32 structure. This flaw allows a local privileged attacker to trigger an out-of-bounds     read by setting the size fields with a value beyond the array boundaries, leading to a crash or     information disclosure. (CVE-2023-39192)

  - A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the     flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds     read, leading to a crash or information disclosure. (CVE-2023-39193)

  - A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt     pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify`     function. This issue may allow a local user to crash the system and cause a denial of service.
    (CVE-2023-42755)

  - An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel     before 6.5.3. A buffer size may not be adequate for frames larger than the MTU. (CVE-2023-45871)

  - A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control)     component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve     (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call     vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling     pointer that can cause a use-after-free. We recommend upgrading past commit     b3d26c5702c7d6c45456326e56d2ccf3f103e60f. (CVE-2023-4623)

  - A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to     achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending     network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug     and lack of error checking in agg_dequeue(). We recommend upgrading past commit     8fc134fee27f2263988ae38920bc03da416b03d8. (CVE-2023-4921)

  - In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix     4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination     array which leads to stack corruption. This construct is necessary to clean the remainder of the register     in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does.
    The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added.
    Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).
    (CVE-2023-52628)

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-356 advisory.

  - A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did     not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN)     attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. (CVE-2023-39189)

  - A flaw was found in the Netfilter subsystem in the Linux kernel. The xt_u32 module did not validate the     fields in the xt_u32 structure. This flaw allows a local privileged attacker to trigger an out-of-bounds     read by setting the size fields with a value beyond the array boundaries, leading to a crash or     information disclosure. (CVE-2023-39192)

  - A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the     flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds     read, leading to a crash or information disclosure. (CVE-2023-39193)

  - An integer overflow flaw was found in the Linux kernel. This issue leads to the kernel allocating     `skb_shared_info` in the userspace, which is exploitable in systems without SMAP protection since     `skb_shared_info` contains references to function pointers. (CVE-2023-42752)

  - An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro     could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to     arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash     the system or potentially escalate their privileges on the system. (CVE-2023-42753)

  - A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt     pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify`     function. This issue may allow a local user to crash the system and cause a denial of service.
    (CVE-2023-42755)

  - An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel     before 6.5.3. A buffer size may not be adequate for frames larger than the MTU. (CVE-2023-45871)

  - A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control)     component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve     (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call     vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling     pointer that can cause a use-after-free. We recommend upgrading past commit     b3d26c5702c7d6c45456326e56d2ccf3f103e60f. (CVE-2023-4623)

  - Rejected reason: CVE-2023-4881 was wrongly assigned to a bug that was deemed to be a non-security issue by     the Linux kernel security team. (CVE-2023-4881)

  - A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to     achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending     network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug     and lack of error checking in agg_dequeue(). We recommend upgrading past commit     8fc134fee27f2263988ae38920bc03da416b03d8. (CVE-2023-4921)

  - In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix     4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination     array which leads to stack corruption. This construct is necessary to clean the remainder of the register     in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does.
    The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added.
    Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).
    (CVE-2023-52628)

  - A null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm     scatterwalk functionality. This issue occurs when a user constructs a malicious packet with specific     socket configuration, which could allow a local user to crash the system or escalate their privileges on     the system. (CVE-2023-6176)

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

ID	Name	Product	Family	Severity
196914	Amazon Linux AMI : kernel (ALAS-2024-1937)	Nessus	Amazon Linux Local Security Checks	high
194976	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2024:1490-1)	Nessus	SuSE Local Security Checks	high
194886	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2024:1480-1)	Nessus	SuSE Local Security Checks	high
194745	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2024:1466-1)	Nessus	SuSE Local Security Checks	high
194454	SUSE SLES15 Security Update : kernel (SUSE-SU-2024:1454-1)	Nessus	SuSE Local Security Checks	high
193454	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2024:1322-1)	Nessus	SuSE Local Security Checks	high
184183	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2023-042)	Nessus	Amazon Linux Local Security Checks	high
182654	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2023-027)	Nessus	Amazon Linux Local Security Checks	high
182458	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-356)	Nessus	Amazon Linux Local Security Checks	high

Detections

Analytics

CVE-2023-52628

high

Tenable Plugins

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high

high

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high