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Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package kernel  (opens in a new tab)

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  • Snyk IDSNYK-RHEL7-KERNEL-6510263
  • published28 Mar 2024
  • disclosed28 Mar 2024
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Introduced: 28 Mar 2024

CVE-2023-52628  (opens in a new tab)
CWE-787  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by RHEL.

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).