{"id":"CVE-2022-49549","state":"PUBLISHED","title":"x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/MCE/AMD: Fix memory leak when threshold_create_bank() fails\n\nIn mce_threshold_create_device(), if threshold_create_bank() fails, the\npreviously allocated threshold banks array @bp will be leaked because\nthe call to mce_threshold_remove_device() will not free it.\n\nThis happens because mce_threshold_remove_device() fetches the pointer\nthrough the threshold_banks per-CPU variable but bp is written there\nonly after the bank creation is successful, and not before, when\nthreshold_create_bank() fails.\n\nAdd a helper which unwinds all the bank creation work previously done\nand pass into it the previously allocated threshold banks array for\nfreeing.\n\n  [ bp: Massage. ]","publishedAt":"2025-02-26T02:14:00.256Z","updatedAt":"2026-05-11T19:02:05.848Z","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":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"b4acb8e7f1594607bc9017ef0aacb40b24a003d6","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"cc0dd4456f9573bf8af9b4d8754433918e809e1e","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"9708f1956eeb70c86943e0bc62fa3b0101b59616","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"396b8e7ab2a99ddac57d3522b3da5e58cb608d37","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"e5f28623ceb103e13fc3d7bd45edf9818b227fd0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/cpu/mce/amd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.121","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.46","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.14","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.3","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/cpu/mce/amd.c"]}],"references":["https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6","https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1e","https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616","https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37","https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49549.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49549","state":"PUBLISHED","datePublished":"2025-02-26T02:14:00.256Z","dateUpdated":"2026-05-11T19:02:05.848Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:08:31.590Z"},"containers":{"cna":{"title":"x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/MCE/AMD: Fix memory leak when threshold_create_bank() fails\n\nIn mce_threshold_create_device(), if threshold_create_bank() fails, the\npreviously allocated threshold banks array @bp will be leaked because\nthe call to mce_threshold_remove_device() will not free it.\n\nThis happens because mce_threshold_remove_device() fetches the pointer\nthrough the threshold_banks per-CPU variable but bp is written there\nonly after the bank creation is successful, and not before, when\nthreshold_create_bank() fails.\n\nAdd a helper which unwinds all the bank creation work previously done\nand pass into it the previously allocated threshold banks array for\nfreeing.\n\n  [ bp: Massage. ]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"b4acb8e7f1594607bc9017ef0aacb40b24a003d6","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"cc0dd4456f9573bf8af9b4d8754433918e809e1e","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"9708f1956eeb70c86943e0bc62fa3b0101b59616","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"396b8e7ab2a99ddac57d3522b3da5e58cb608d37","versionType":"git"},{"version":"6458de97fc15530b54477c4e2b70af653e8ac3d9","status":"affected","lessThan":"e5f28623ceb103e13fc3d7bd45edf9818b227fd0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/cpu/mce/amd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.121","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.46","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.14","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.3","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kernel/cpu/mce/amd.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6"},{"url":"https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1e"},{"url":"https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616"},{"url":"https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37"},{"url":"https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:02:05.848Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.10.121"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.17.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.19"}]}]}],"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-2022-49549","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:37:22.894160Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:46:39.391Z"}}]}}}