It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-251 advisory.

    2023-08-03: CVE-2023-3609 and CVE-2023-3610 were added to this advisory.

    A use-after-free flaw was found in the Netfilter subsystem of the Linux kernel when processing named and     anonymous sets in batch requests, which can lead to performing arbitrary reads and writes in kernel     memory. This flaw allows a local user with CAP_NET_ADMIN capability to crash or potentially escalate their     privileges on the system. (CVE-2023-3117)

    Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()`     failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace     (CVE-2023-31248)

    A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in     net/netfilter/nf_tables_api.c.

    Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same     transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to     cause a privilege escalation issue.

    We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97. (CVE-2023-3390)

    Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register     contents when CAP_NET_ADMIN is in any user or network namespace (CVE-2023-35001)

    A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to     achieve local privilege escalation.

    If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or     decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter     and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

    We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc. (CVE-2023-3609)

    A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to     achieve local privilege escalation.

    Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE.
    The vulnerability requires CAP_NET_ADMIN to be triggered.

    We recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795. (CVE-2023-3610)

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.

Detections

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Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-251)

critical Nessus Plugin ID 178535

Version 1.5