CVE-2026-93222
signal: avoid shared siginfo namespace rewrites
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.
INFO
Published Date :
Sept. 24, 2026, 4:17 p.m.
Last Modified :
Sept. 24, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Copy siginfo before modifying it.
- Ensure siginfo is not shared across recipients.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-93222.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-93222 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-93222
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-93222 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-93222 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 24, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/93xxx/CVE-2026-93222.json">CVE-2026-93222</a> Added Reference https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4 Added Reference https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c Added Reference https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc Added Reference https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9 Added Reference https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f Added Reference https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d Added Reference https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589 Added Reference https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0