{"id":"CVE-2026-93222","summary":"signal: avoid shared siginfo namespace rewrites","details":"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.","modified":"2026-09-26T03:48:38.762826958Z","published":"2026-09-24T15:21:04.961Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93222.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/03c8761e75d1619906bb503686f9cc1dfc6a67f4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/148b0dae2a1755beb873a2aab51fb191414f068c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4ee7c4e4719a825052f42f02ec159b5b42b68fbc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b1de022304ef85284c5933a5fb8492f6f54efc9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a246da20c8e4ae4319511c698b9f26ad0ad1769f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b655c2040ce836afad5643842543567b31f8c11d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d19cdc167e696714509e87d3f7ae765b6e164589"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e015d1ac6b43a23c52c5163299414ae77d7d4ae0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93222.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93222"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7a0cf094944e2540758b7f957eb6846d5126f535"},{"fixed":"e015d1ac6b43a23c52c5163299414ae77d7d4ae0"},{"fixed":"4ee7c4e4719a825052f42f02ec159b5b42b68fbc"},{"fixed":"148b0dae2a1755beb873a2aab51fb191414f068c"},{"fixed":"6b1de022304ef85284c5933a5fb8492f6f54efc9"},{"fixed":"03c8761e75d1619906bb503686f9cc1dfc6a67f4"},{"fixed":"a246da20c8e4ae4319511c698b9f26ad0ad1769f"},{"fixed":"b655c2040ce836afad5643842543567b31f8c11d"},{"fixed":"d19cdc167e696714509e87d3f7ae765b6e164589"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"e897dd22800f02bd48aefb1511fff0b2ce96e94c"},{"last_affected":"2f0e9eed11ca778d0ec5507a739c28472fd4ca20"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.1.20"},{"fixed":"5.2"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.2.3"},{"fixed":"5.3"}]}],"versions":["v5.2","v5.1.19","v5.2.2","v5.2-rc2","v5.1.18","v5.2.1","v5.2-rc7","v5.2-rc4","v5.1.17","v5.2-rc1","v5.1.16","v5.2-rc5","v5.2-rc6","v5.1.15","v5.2-rc3","v5.1.14","v5.1","v5.1.13","v5.1.12","v5.1.11","v5.1.10","v5.1.9","v5.1.8","v5.1.7","v5.1.6","v5.1.5","v5.1.4","v5.1.3","v5.1.2","v5.0-rc8","v5.1.1","v5.1-rc7","v5.1-rc1","v5.1-rc6","v5.1-rc5","v5.0","v5.1-rc3","v5.1-rc2","v5.1-rc4","v5.0-rc1","v5.0-rc4","v5.0-rc3","v5.0-rc6","v5.0-rc7","v5.0-rc2","v5.0-rc5","v4.20-rc1","v4.19","v4.20","v4.20-rc7","v4.20-rc5","v4.20-rc6","v4.20-rc4","v4.20-rc2","v4.20-rc3","v4.19-rc2","v4.19-rc8","v4.19-rc4","v4.19-rc1","v4.19-rc7","v4.19-rc6","v4.19-rc5","v4.19-rc3","v4.18","v4.18-rc1","v4.18-rc8","v4.18-rc2","v4.18-rc5","v4.18-rc6","v4.18-rc7","v4.17","v4.18-rc3","v4.18-rc4","v4.17-rc1","v4.17-rc2","v4.17-rc7","v4.17-rc3","v4.17-rc4","v4.16","v4.17-rc6","v4.17-rc5","v4.16-rc7","v4.16-rc4","v4.16-rc1","v4.16-rc2","v4.16-rc5","v4.16-rc3","v4.16-rc6","v4.14","v4.15","v4.15-rc1","v4.15-rc4","v4.15-rc9","v4.15-rc8","v4.15-rc7","v4.15-rc3","v4.15-rc2","v4.15-rc5","v4.15-rc6","v4.14-rc1","v4.14-rc7","v4.14-rc3","v4.13","v4.14-rc8","v4.14-rc4","v4.14-rc6","v4.14-rc2","v4.14-rc5","v4.13-rc2","v4.13-rc1","v4.13-rc3","v4.13-rc7","v4.13-rc4","v4.13-rc5","v4.13-rc6","v4.12-rc1","v4.12","v4.12-rc5","v4.12-rc7","v4.12-rc6","v4.12-rc4","v4.12-rc2","v4.12-rc3","v4.11","v4.11-rc1","v4.11-rc6","v4.11-rc8","v4.11-rc7","v4.11-rc3","v4.11-rc5","v4.11-rc2","v4.11-rc4","v4.10","v4.9","v4.10-rc8","v4.10-rc3","v4.10-rc1","v4.10-rc7","v4.10-rc6","v4.10-rc2","v4.10-rc5","v4.10-rc4","v4.9-rc7","v4.9-rc6","v4.9-rc8","v4.9-rc1","v4.9-rc5","v4.9-rc3","v4.9-rc4","v4.9-rc2","v4.8","v4.8-rc8","v4.8-rc2","v4.8-rc1","v4.8-rc7","v4.8-rc6","v4.8-rc5","v4.8-rc4","v4.8-rc3","v4.7","v4.7-rc4","v4.7-rc2","v4.7-rc1","v4.7-rc7","v4.7-rc6","v4.7-rc3","v4.7-rc5","v4.6","v4.6-rc1","v4.6-rc6","v4.6-rc4","v4.6-rc7","v4.6-rc5","v4.5-rc4","v4.6-rc2","v4.6-rc3","v4.5","v4.4","v4.5-rc1","v4.5-rc6","v4.5-rc2","v4.5-rc7","v4.5-rc5","v4.5-rc3","v4.4-rc1","v4.4-rc2","v4.4-rc8","v4.4-rc3","v4.4-rc7","v4.4-rc5","v4.4-rc6","v4.4-rc4","v4.3","v4.3-rc1","v4.3-rc6","v4.3-rc4","v4.3-rc2","v4.3-rc7","v4.3-rc5","v4.3-rc3","v4.2","v4.2-rc2","v4.2-rc1","v4.2-rc8","v4.2-rc4","v4.2-rc6","v4.2-rc7","v4.0-rc5","v4.2-rc5","v4.2-rc3","v4.1-rc2","v4.1","v4.1-rc1","v4.1-rc8","v4.1-rc7","v4.1-rc6","v4.1-rc3","v4.1-rc4","v4.0","v4.1-rc5","v4.0-rc1","v4.0-rc2","v4.0-rc7","v4.0-rc3","v4.0-rc6","v4.0-rc4","v3.19","v3.19-rc7","v3.19-rc5","v3.19-rc1","v3.19-rc6","v3.19-rc4","v3.18-rc1","v3.19-rc3","v3.19-rc2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