CVE-2024-50142

Advisory lineage Upstream: 0 Downstream: 62
Modified
Published: 07 Nov 2024, 09:31
Last modified:12 May 2026, 12:00

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
<0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Nov 2024, 09:31
Published
Vulnerability first disclosed
12 May 2026, 12:00
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: validate new SA's prefixlen using SA family when sel.family is unset This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.") syzbot created an SA with usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET Because of the AF_UNSPEC selector, verify_newsa_info doesn't put limits on prefixlen_{s,d}. But then copy_from_user_state sets x->sel.family to usersa.family (AF_INET). Do the same conversion in verify_newsa_info before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Affected Systems

  • linux•linux

    ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f31398570acf0f0804c644006f7bfa9067106b0a | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 401ad99a5ae7180dd9449eac104cb755f442e7f3 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8df5cd51fd70c33aa1776e5cbcd82b0a86649d73 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < bce1afaa212ec380bf971614f70909a27882b862 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7d9868180bd1e4cf37e7c5067362658971162366 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e68dd80ba498265d2266b12dc3459164f4ff0c4a | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563 | 2.6.12

  • linux•linux_kernel

    ≥ 2.6.12, < 4.19.323 | ≥ 4.20, < 5.4.285 | ≥ 5.5, < 5.10.229 | ≥ 5.11, < 5.15.170 | ≥ 5.16, < 6.1.115 | ≥ 6.2, < 6.6.59 | ≥ 6.7, < 6.11.6 | 6.12:rc1 | 6.12:rc2 | 6.12:rc3 | 6.12:rc4

References (11)