CVE-2026-93222: Linux vulnerability

CVE-2026-93222: signal: avoid shared siginfo namespace rewrites

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.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 19, 2026, 09:07 UTC (UTC+00:00)

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2026-93222 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 24, 2026, 15:21 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

0ADP providers

9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
Sep 17, 2026, 16:02 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
Sep 24, 2026, 15:21 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 19, 2026, 09:07 UTC (UTC+00:00)

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0CVE reference, Linux
https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbcCVE reference, Linux
https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068cCVE reference, Linux
https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9CVE reference, Linux
https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4CVE reference, Linux
https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769fCVE reference, Linux
https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11dCVE reference, Linux
https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589CVE reference, Linux

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux7a0cf094944e2540758b7f957eb6846d5126f535, 7a0cf094944e2540758b7f957eb6846d5126f535, 7a0cf094944e2540758b7f957eb6846d5126f535, 7a0cf094944e2540758b7f957eb6846d5126f535, 7a0cf094944e2540758b7f957eb6846d5126f535, 7a0cf094944e2540758b7f957eb6846d5126f535, 7a0cf094944e2540758b7f957eb6846d5126f535, 7a0cf094944e2540758b7f957eb6846d5126f535, e897dd22800f02bd48aefb1511fff0b2ce96e94c, 2f0e9eed11ca778d0ec5507a739c28472fd4ca20, 5.1.20, 5.2.3unaffected

LinuxLinux5.3, 0, 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3affected

Weakness

CWE details

No CWE listed

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