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CVE-2026-93222

signal: avoid shared siginfo namespace rewrites

N/A
Published: September 24, 2026 at 03:21 PM UTC
Updated: October 19, 2026 at 10:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
2f0e9eed11ca778d0ec5507a739c28472fd4ca205.1.205.2.35.37a0cf094944e2540758b7f957eb6846d5126f535e897dd22800f02bd48aefb1511fff0b2ce96e94c
Vendor states this is fixed in 03c8761e75d1619906bb503686f9cc1dfc6a67f4 (fixed)
Vendor states this is fixed in 148b0dae2a1755beb873a2aab51fb191414f068c (fixed)
Vendor states this is fixed in 4ee7c4e4719a825052f42f02ec159b5b42b68fbc (fixed)
Vendor states this is fixed in 6b1de022304ef85284c5933a5fb8492f6f54efc9 (fixed)
Vendor states this is fixed in a246da20c8e4ae4319511c698b9f26ad0ad1769f (fixed)
Vendor states this is fixed in b655c2040ce836afad5643842543567b31f8c11d (fixed)
Vendor states this is fixed in d19cdc167e696714509e87d3f7ae765b6e164589 (fixed)
Vendor states this is fixed in e015d1ac6b43a23c52c5163299414ae77d7d4ae0 (fixed)
Vendor states this is fixed in 5.10.270 (unaffected)
Vendor states this is fixed in 5.15.221 (unaffected)
Affected range stops below 5.2, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 5.3 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.109 (unaffected)
Vendor states this is fixed in 6.18.50 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.4 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0
Source: cverecord
https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc
Source: cverecord
https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c
Source: cverecord
https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9
Source: cverecord
https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4
Source: cverecord
https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f
Source: cverecord
https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d
Source: cverecord
https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589

Quick Info

StatusRECEIVED

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