CVE-2023-6932

Advisory lineage Upstream: 0 Downstream: 69
Modified
Published: 19 Dec 2023, 14:09
Last modified:12 May 2026, 10:52

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability -0.03%
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, 10:52
Last Modified
Vulnerability information updated

Description

A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.

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: 0.02%• Percentile: 6%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    10.0

  • Unknown•Kernel

    ≥ 2.6.12, < 6.7

  • linux•linux_kernel

    < 4.14.332 | ≥ 4.15, < 4.19.301 | ≥ 4.20, < 5.4.263 | ≥ 5.5, < 5.10.203 | ≥ 5.11, < 5.15.142 | ≥ 5.16, < 6.1.66 | ≥ 6.2, < 6.6.5

References (9)