Important: kernel

Issue Overview:

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 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)

Affected Packages:

kernel

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update kernel to update your system.

New Packages:

aarch64:  
    kernel-4.14.320-242.534.amzn2.aarch64  
    kernel-headers-4.14.320-242.534.amzn2.aarch64  
    kernel-debuginfo-common-aarch64-4.14.320-242.534.amzn2.aarch64  
    perf-4.14.320-242.534.amzn2.aarch64  
    perf-debuginfo-4.14.320-242.534.amzn2.aarch64  
    python-perf-4.14.320-242.534.amzn2.aarch64  
    python-perf-debuginfo-4.14.320-242.534.amzn2.aarch64  
    kernel-tools-4.14.320-242.534.amzn2.aarch64  
    kernel-tools-devel-4.14.320-242.534.amzn2.aarch64  
    kernel-tools-debuginfo-4.14.320-242.534.amzn2.aarch64  
    kernel-devel-4.14.320-242.534.amzn2.aarch64  
    kernel-debuginfo-4.14.320-242.534.amzn2.aarch64  
  
i686:  
    kernel-headers-4.14.320-242.534.amzn2.i686  
  
src:  
    kernel-4.14.320-242.534.amzn2.src  
  
x86_64:  
    kernel-4.14.320-242.534.amzn2.x86_64  
    kernel-headers-4.14.320-242.534.amzn2.x86_64  
    kernel-debuginfo-common-x86_64-4.14.320-242.534.amzn2.x86_64  
    perf-4.14.320-242.534.amzn2.x86_64  
    perf-debuginfo-4.14.320-242.534.amzn2.x86_64  
    python-perf-4.14.320-242.534.amzn2.x86_64  
    python-perf-debuginfo-4.14.320-242.534.amzn2.x86_64  
    kernel-tools-4.14.320-242.534.amzn2.x86_64  
    kernel-tools-devel-4.14.320-242.534.amzn2.x86_64  
    kernel-tools-debuginfo-4.14.320-242.534.amzn2.x86_64  
    kernel-devel-4.14.320-242.534.amzn2.x86_64  
    kernel-debuginfo-4.14.320-242.534.amzn2.x86_64  
    kernel-livepatch-4.14.320-242.534-1.0-0.amzn2.x86_64  

Additional References

Red Hat: CVE-2023-3117, CVE-2023-35001

Mitre: CVE-2023-3117, CVE-2023-35001