CVE-2026-46158

MEDIUM EPSS 2.8%
Published May 28, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 28, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(). It should then be released in all cases at the end. Some (unlikely) checks were returning directly instead of calling sock_put() to decrease the refcount. Jump to a new 'exit' label to call __sock_put() (which will become sock_put() in the next commit) to fix this potential leak. While at it, drop the '!msk' check which cannot happen because it is never reset, and explicitly mark the remaining one as "unlikely".

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
2.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.10  –  <6.6.142
linuxlinux_kernel*≥6.7  –  <6.12.92
linuxlinux_kernel*≥6.13  –  <6.18.30
linuxlinux_kernel*≥6.19  –  <7.0.7
linuxlinux_kernel7.1any
linuxlinux_kernel7.1any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeae
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9426265e157dd77ec237c795901ed4dea6d69b5c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b41dd76f3b9735096c21d3e799a2b9fe36498d57
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeae
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9426265e157dd77ec237c795901ed4dea6d69b5c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b41dd76f3b9735096c21d3e799a2b9fe36498d57
    Patch