CVE-2026-43089

MEDIUM EPSS 2.4%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm_user: fix info leak in build_mapping() struct xfrm_usersa_id has a one-byte padding hole after the proto field, which ends up never getting set to zero before copying out to userspace. Fix that up by zeroing out the whole structure before setting individual variables.

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
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥2.6.29.1  –  <6.6.136
linuxlinux_kernel*≥6.7  –  <6.12.83
linuxlinux_kernel*≥6.13  –  <6.18.24
linuxlinux_kernel*≥6.19  –  <6.19.14
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/1beb76b2053b68c491b78370794b8ff63c8f8c02
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/521385cbd50ca9474396d88462fcdfa6489685d9
  • git.kernel.org https://git.kernel.org/stable/c/5a1a4b049ddde41466ccac0daeec326254b133f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/700c9622b23c33b5933e6dcea816492c064e4e10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32
  • git.kernel.org https://git.kernel.org/stable/c/c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f
  • git.kernel.org https://git.kernel.org/stable/c/d3125c541a96fb3c0fc7210112684baf22b6c24d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1beb76b2053b68c491b78370794b8ff63c8f8c02
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a1a4b049ddde41466ccac0daeec326254b133f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/700c9622b23c33b5933e6dcea816492c064e4e10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d3125c541a96fb3c0fc7210112684baf22b6c24d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c
    Patch