{"id":"CVE-2026-93222","state":"PUBLISHED","title":"signal: avoid shared siginfo namespace rewrites","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsignal: avoid shared siginfo namespace rewrites\n\nsend_signal_locked() rewrites sender ids for the target namespace.  Group\nsends reuse the same siginfo, so one recipient can affect the next.\n\nCopy the siginfo before changing it.","publishedAt":"2026-09-24T15:21:04.961Z","updatedAt":"2026-10-19T09:07:33.885Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"e015d1ac6b43a23c52c5163299414ae77d7d4ae0","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"4ee7c4e4719a825052f42f02ec159b5b42b68fbc","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"148b0dae2a1755beb873a2aab51fb191414f068c","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"6b1de022304ef85284c5933a5fb8492f6f54efc9","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"03c8761e75d1619906bb503686f9cc1dfc6a67f4","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"a246da20c8e4ae4319511c698b9f26ad0ad1769f","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"b655c2040ce836afad5643842543567b31f8c11d","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"d19cdc167e696714509e87d3f7ae765b6e164589","versionType":"git"},{"version":"e897dd22800f02bd48aefb1511fff0b2ce96e94c","status":"affected","versionType":"git"},{"version":"2f0e9eed11ca778d0ec5507a739c28472fd4ca20","status":"affected","versionType":"git"},{"version":"5.1.20","status":"affected","lessThan":"5.2","versionType":"semver"},{"version":"5.2.3","status":"affected","lessThan":"5.3","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/signal.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/signal.c"]}],"references":["https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0","https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc","https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c","https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9","https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4","https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f","https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d","https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93222.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93222","state":"PUBLISHED","datePublished":"2026-09-24T15:21:04.961Z","dateUpdated":"2026-10-19T09:07:33.885Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.094Z"},"containers":{"cna":{"title":"signal: avoid shared siginfo namespace rewrites","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsignal: avoid shared siginfo namespace rewrites\n\nsend_signal_locked() rewrites sender ids for the target namespace.  Group\nsends reuse the same siginfo, so one recipient can affect the next.\n\nCopy the siginfo before changing it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"e015d1ac6b43a23c52c5163299414ae77d7d4ae0","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"4ee7c4e4719a825052f42f02ec159b5b42b68fbc","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"148b0dae2a1755beb873a2aab51fb191414f068c","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"6b1de022304ef85284c5933a5fb8492f6f54efc9","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"03c8761e75d1619906bb503686f9cc1dfc6a67f4","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"a246da20c8e4ae4319511c698b9f26ad0ad1769f","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"b655c2040ce836afad5643842543567b31f8c11d","versionType":"git"},{"version":"7a0cf094944e2540758b7f957eb6846d5126f535","status":"affected","lessThan":"d19cdc167e696714509e87d3f7ae765b6e164589","versionType":"git"},{"version":"e897dd22800f02bd48aefb1511fff0b2ce96e94c","status":"affected","versionType":"git"},{"version":"2f0e9eed11ca778d0ec5507a739c28472fd4ca20","status":"affected","versionType":"git"},{"version":"5.1.20","status":"affected","lessThan":"5.2","versionType":"semver"},{"version":"5.2.3","status":"affected","lessThan":"5.3","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/signal.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/signal.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0"},{"url":"https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc"},{"url":"https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c"},{"url":"https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9"},{"url":"https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4"},{"url":"https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f"},{"url":"https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d"},{"url":"https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:07:33.885Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1.20"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","v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