DEBIAN-CVE-2026-23204

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2026-23204
Downstream
DSA-6141-1
Published: 14 Feb 2026, 17:15
Last modified:02 May 2026, 10:02

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

14 Feb 2026, 17:15
Published
Vulnerability first disclosed
02 May 2026, 10:02
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_u32: use skb_header_pointer_careful() skb_header_pointer() does not fully validate negative @offset values. Use skb_header_pointer_careful() instead. GangMin Kim provided a report and a repro fooling u32_classify(): BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0 net/sched/cls_u32.c:221

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Systems

  • debian•linux

    all | all | all | all | < 6.1.170-1 | < 6.12.73-1 | < 6.18.10-1

  • debian•linux-6.1

    < 6.1.170-1~deb11u1

References (1)