{"id":"CVE-2022-50382","state":"PUBLISHED","title":"padata: Always leave BHs disabled when running ->parallel()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npadata: Always leave BHs disabled when running ->parallel()\n\nA deadlock can happen when an overloaded system runs ->parallel() in the\ncontext of the current task:\n\n    padata_do_parallel\n      ->parallel()\n        pcrypt_aead_enc/dec\n          padata_do_serial\n            spin_lock(&reorder->lock) // BHs still enabled\n              <interrupt>\n                ...\n                  __do_softirq\n                    ...\n                      padata_do_serial\n                        spin_lock(&reorder->lock)\n\nIt's a bug for BHs to be on in _do_serial as Steffen points out, so\nensure they're off in the \"current task\" case like they are in\npadata_parallel_worker to avoid this situation.","publishedAt":"2025-09-18T13:33:04.193Z","updatedAt":"2026-05-11T19:18:27.430Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"8e0681dd4eee029eb1d533d06993f7cb091efb73","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"17afa98bccec4f52203508b3f49b5f948c6fd6ac","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"6cfa9e60c0f88fdec6368e081ab968411cc706b1","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"34c3a47d20ae55b3600fed733bf96eafe9c500d5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/padata.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/padata.c"]}],"references":["https://git.kernel.org/stable/c/8e0681dd4eee029eb1d533d06993f7cb091efb73","https://git.kernel.org/stable/c/17afa98bccec4f52203508b3f49b5f948c6fd6ac","https://git.kernel.org/stable/c/7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d","https://git.kernel.org/stable/c/6cfa9e60c0f88fdec6368e081ab968411cc706b1","https://git.kernel.org/stable/c/34c3a47d20ae55b3600fed733bf96eafe9c500d5"],"weaknesses":["CWE-667"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50382.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50382","state":"PUBLISHED","datePublished":"2025-09-18T13:33:04.193Z","dateUpdated":"2026-05-11T19:18:27.430Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-17T14:53:06.996Z"},"containers":{"cna":{"title":"padata: Always leave BHs disabled when running ->parallel()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npadata: Always leave BHs disabled when running ->parallel()\n\nA deadlock can happen when an overloaded system runs ->parallel() in the\ncontext of the current task:\n\n    padata_do_parallel\n      ->parallel()\n        pcrypt_aead_enc/dec\n          padata_do_serial\n            spin_lock(&reorder->lock) // BHs still enabled\n              <interrupt>\n                ...\n                  __do_softirq\n                    ...\n                      padata_do_serial\n                        spin_lock(&reorder->lock)\n\nIt's a bug for BHs to be on in _do_serial as Steffen points out, so\nensure they're off in the \"current task\" case like they are in\npadata_parallel_worker to avoid this situation."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"8e0681dd4eee029eb1d533d06993f7cb091efb73","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"17afa98bccec4f52203508b3f49b5f948c6fd6ac","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"6cfa9e60c0f88fdec6368e081ab968411cc706b1","versionType":"git"},{"version":"4611ce22468895acd61fee9ac1da810d60617d9a","status":"affected","lessThan":"34c3a47d20ae55b3600fed733bf96eafe9c500d5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/padata.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/padata.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8e0681dd4eee029eb1d533d06993f7cb091efb73"},{"url":"https://git.kernel.org/stable/c/17afa98bccec4f52203508b3f49b5f948c6fd6ac"},{"url":"https://git.kernel.org/stable/c/7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d"},{"url":"https://git.kernel.org/stable/c/6cfa9e60c0f88fdec6368e081ab968411cc706b1"},{"url":"https://git.kernel.org/stable/c/34c3a47d20ae55b3600fed733bf96eafe9c500d5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:18:27.430Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-50382","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T18:48:04.681650Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-667","lang":"en","type":"CWE","description":"CWE-667 Improper Locking"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T18:53:04.146Z"}}]}}}