CVE-2023-31436

Advisory lineage Upstream: 0 Downstream: 88
Modified
Published: 28 Apr 2023, 00:00
Last modified:21 Oct 2024, 16:01

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.04% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Apr 2023, 00:00
Published
Vulnerability first disclosed
21 Oct 2024, 16:01
Last Modified
Vulnerability information updated

Description

qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

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

EPSS Trends

Current EPSS score: 0.04%• Percentile: 13%

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

  • linux•linux_kernel

    ≥ 3.7, < 4.14.314 | ≥ 4.15, < 4.19.282 | ≥ 4.20, < 5.4.242 | ≥ 5.5.0, < 5.10.179 | ≥ 5.11, < 5.15.109 | ≥ 5.16, < 6.1.26 | ≥ 6.2, < 6.2.13

References (9)