CVE-2023-6531

Aliases:DEBIAN-CVE-2023-6531
Advisory lineage Upstream: 0 Downstream: 64
Modified
Published: 21 Jan 2024, 10:01
Last modified:06 Aug 2026, 19:12

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7 HIGH
v3.1 (cve.org)
EPSS Score
0.22% LOW
0% probability +0.21%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 Jan 2024, 10:01
Published
Vulnerability first disclosed
06 Aug 2026, 19:12
Last Modified
Vulnerability information updated

Description

A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic() on the socket that the SKB is queued on.

CVSS Metrics

  • 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: 0.22%• Percentile: 13%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • debian•linux

    < 5.10.205-2 | < 6.1.69-1 | < 6.6.8-1 | < 6.6.8-1

  • linux•linux_kernel

    < 6.7 | 6.7:rc1 | 6.7:rc2 | 6.7:rc3 | 6.7:rc4

  • redhat•enterprise_linux

    9.0

References (7)