🛡️ CVE-2024-50207 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

ring-buffer: Fix reader locking when changing the sub buffer order

In the Linux kernel, the following vulnerability has been resolved:

ring-buffer: Fix reader locking when changing the sub buffer order

The function ring_buffer_subbuf_order_set() updates each

ring_buffer_per_cpu and installs new sub buffers that match the requested

page order. This operation may be invoked concurrently with readers that

rely on some of the modified data, such as the head bit (RB_PAGE_HEAD), or

the ring_buffer_per_cpu.pages and reader_page pointers. However, no

exclusive access is acquired by ring_buffer_subbuf_order_set(). Modifying

the mentioned data while a reader also operates on them can then result in

incorrect memory access and various crashes.

Fix the problem by taking the reader_lock when updating a specific

ring_buffer_per_cpu in ring_buffer_subbuf_order_set().

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2024-50207 is recorded against 2 packages.

  • kernel (from 6.8.0 up to 6.11.6)
  • linux-kernel

Timeline and source

Published on 8 November 2024 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-50207 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-11-08
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.8.0 6.11.6
linux-kernel — —

Similar Threats

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