---
id: CVE-2026-93222
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  signal: avoid shared siginfo namespace rewrites

  send_signal_locked() rewrites sender ids for the target namespace
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  signal: avoid shared siginfo namespace rewrites

  send_signal_locked() rewrites sender ids for the target namespace.  Group
  sends reuse the same siginfo, so one recipien…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    e015d1ac6b43a23c52c5163299414ae77d7d4ae0
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    4ee7c4e4719a825052f42f02ec159b5b42b68fbc
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    148b0dae2a1755beb873a2aab51fb191414f068c
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    6b1de022304ef85284c5933a5fb8492f6f54efc9
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    03c8761e75d1619906bb503686f9cc1dfc6a67f4
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    a246da20c8e4ae4319511c698b9f26ad0ad1769f
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    b655c2040ce836afad5643842543567b31f8c11d
  - >-
    Linux >= 7a0cf094944e2540758b7f957eb6846d5126f535 <
    d19cdc167e696714509e87d3f7ae765b6e164589
  - Linux e897dd22800f02bd48aefb1511fff0b2ce96e94c
  - Linux 2f0e9eed11ca778d0ec5507a739c28472fd4ca20
  - Linux >= 5.1.20 < 5.2
  - Linux >= 5.2.3 < 5.3
  - Linux 5.3
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T16:17:17.437'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93222'
references:
  - url: 'https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T15:45:56.666Z'
epss: 0.00176
epssPercentile: 0.06423
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

signal: avoid shared siginfo namespace rewrites

send_signal_locked() rewrites sender ids for the target namespace.  Group
sends reuse the same siginfo, so one recipient can affect the next.

Copy the siginfo before changing it.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.