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CVE-2026-93222

signal: avoid shared siginfo namespace rewrites

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.2, 5.3, 5.10.270, 5.15.221, 6.1.188, and 4 more
None on Exploit-DB, Metasploit or GitHub

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 recipient can affect the next. Copy the siginfo before changing it.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in e015d1ac6b43a23c52c5163299414ae77d7d4ae0; From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in 4ee7c4e4719a825052f42f02ec159b5b42b68fbc; From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in 148b0dae2a1755beb873a2aab51fb191414f068c; From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in 6b1de022304ef85284c5933a5fb8492f6f54efc9; From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in 03c8761e75d1619906bb503686f9cc1dfc6a67f4; From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in a246da20c8e4ae4319511c698b9f26ad0ad1769f; From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in b655c2040ce836afad5643842543567b31f8c11d; From 7a0cf094944e2540758b7f957eb6846d5126f535 · fixed in d19cdc167e696714509e87d3f7ae765b6e164589; From 5.1.20 · fixed in 5.2; From 5.2.3 · fixed in 5.3

  • Linux Linux

    5.3

  • KernelLinux

    From 5.3.0 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.109; From 6.13.0 · fixed in 6.18.50; From 6.19.0 · fixed in 7.2.4

References 8

git.kernel.org