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Out-of-bounds Write Affecting kernel-core package, versions <0:5.14.0-284.66.1.el9_2

Severity

 Recommended
medium

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.05% (18th percentile)

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  • Snyk ID SNYK-RHEL9-KERNELCORE-6846396
  • published 15 May 2024
  • disclosed 28 Mar 2024
Report a new vulnerability Found a mistake?

Introduced: 28 Mar 2024

CVE-2023-52628 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade RHEL:9 kernel-core to version 0:5.14.0-284.66.1.el9_2 or higher.
This issue was patched in RHSA-2024:2845.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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).

CVSS Scores

version 3.1
Expand this section

Red Hat

7 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

SUSE

7.8 high