DEBIAN-CVE-2018-18559

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2018-18559
Published: 22 Oct 2018, 16:29
Last modified:28 Apr 2026, 20:19

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8.1 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

22 Oct 2018, 16:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:19
Last Modified
Vulnerability information updated

Description

In the Linux kernel through 4.19, a use-after-free can occur due to a race condition between fanout_add from setsockopt and bind on an AF_PACKET socket. This issue exists because of the 15fe076edea787807a7cdc168df832544b58eba6 incomplete fix for a race condition. The code mishandles a certain multithreaded case involving a packet_do_bind unregister action followed by a packet_notifier register action. Later, packet_release operates on only one of the two applicable linked lists. The attacker can achieve Program Counter control.

CVSS Metrics

  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•linux

    < 4.14.7-1 | < 4.14.7-1 | < 4.14.7-1 | < 4.14.7-1

References (1)