CVE-2023-6931

Advisory lineage Upstream: 0 Downstream: 68
Modified
Published: 19 Dec 2023, 14:09
Last modified:12 May 2026, 10:46

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.24% LOW
0% probability -0.15%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Dec 2023, 14:09
Published
Vulnerability first disclosed
12 May 2026, 10:46
Last Modified
Vulnerability information updated

Description

A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation. A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group(). We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v3.1•HIGH•Score: 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.24%• Percentile: 47%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•debian_linux

    10.0

  • Unknown•Kernel

    ≥ 4.3, < 6.7

  • linux•linux_kernel

    ≥ 4.3, < 6.7

References (8)