CVE-2024-50142

MEDIUM EPSS 17.0%
Published Nov 7, 20241y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Nov 7, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
17.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥2.6.12  –  <4.19.323
linuxlinux_kernel*≥4.20  –  <5.4.285
linuxlinux_kernel*≥5.5  –  <5.10.229
linuxlinux_kernel*≥5.11  –  <5.15.170
linuxlinux_kernel*≥5.16  –  <6.1.115
linuxlinux_kernel*≥6.2  –  <6.6.59
linuxlinux_kernel*≥6.7  –  <6.11.6
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any

References 11

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • git.kernel.org https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0a
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0a
    Patch