{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50095","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-06-18T10:57:27.411Z","datePublished":"2025-06-18T11:02:33.221Z","dateUpdated":"2026-05-11T19:12:44.096Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:12:44.096Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nposix-cpu-timers: Cleanup CPU timers before freeing them during exec\n\nCommit 55e8c8eb2c7b (\"posix-cpu-timers: Store a reference to a pid not a\ntask\") started looking up tasks by PID when deleting a CPU timer.\n\nWhen a non-leader thread calls execve, it will switch PIDs with the leader\nprocess. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find\nthe task because the timer still points out to the old PID.\n\nThat means that armed timers won't be disarmed, that is, they won't be\nremoved from the timerqueue_list. exit_itimers will still release their\nmemory, and when that list is later processed, it leads to a\nuse-after-free.\n\nClean up the timers from the de-threaded task before freeing them. This\nprevents a reported use-after-free."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/exec.c"],"versions":[{"version":"55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59","lessThan":"541840859ace9c2ccebc32fa9e376c7bd3def490","status":"affected","versionType":"git"},{"version":"55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59","lessThan":"9e255ed238fc67058df87b0388ad6d4b2ef3a2bd","status":"affected","versionType":"git"},{"version":"55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59","lessThan":"e8cb6e8fd9890780f1bfcf5592889e1b879e779c","status":"affected","versionType":"git"},{"version":"55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59","lessThan":"b2fc1723eb65abb83e00d5f011de670296af0b28","status":"affected","versionType":"git"},{"version":"55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59","lessThan":"e362359ace6f87c201531872486ff295df306d13","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/exec.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.137","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.61","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.18.18","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19.2","lessThanOrEqual":"5.19.*","status":"unaffected","versionType":"semver"},{"version":"6.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.137"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.18.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.19.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/541840859ace9c2ccebc32fa9e376c7bd3def490"},{"url":"https://git.kernel.org/stable/c/9e255ed238fc67058df87b0388ad6d4b2ef3a2bd"},{"url":"https://git.kernel.org/stable/c/e8cb6e8fd9890780f1bfcf5592889e1b879e779c"},{"url":"https://git.kernel.org/stable/c/b2fc1723eb65abb83e00d5f011de670296af0b28"},{"url":"https://git.kernel.org/stable/c/e362359ace6f87c201531872486ff295df306d13"}],"title":"posix-cpu-timers: Cleanup CPU timers before freeing them during exec","x_generator":{"engine":"bippy-1.2.0"}}}}