{"id":"CVE-2022-49055","state":"PUBLISHED","title":"drm/amdkfd: Check for potential null return of kmalloc_array()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check for potential null return of kmalloc_array()\n\nAs the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference.\nTherefore, it is better to check the return value of kmalloc_array() to avoid this confusion.","publishedAt":"2025-02-26T01:54:27.771Z","updatedAt":"2026-05-11T18:52:10.429Z","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":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"32cf90a521dcc0f136db7ee5ba32bfe5f79e460e","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"40bf32dbfef866c83a3e74800b81d79e52b6d20b","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"94869bb0de69a812f70231b0eb480bb2f7ae73a6","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"c7a268b33882d5feaafd29c1734456f41ba41396","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"1d7a5aae884ca727d41c7ed15d4c82fdb67c040c","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"f2658d5966bcee8c3eb487875f459756d4f7cdfc","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"0a692c625e373fef692ffbc7fc41f8a025f01cb7","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"ebbb7bb9e80305820dc2328a371c1b35679f2667","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"4.9.311","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.276","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.239","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.190","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.112","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.35","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.4","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]}],"references":["https://git.kernel.org/stable/c/32cf90a521dcc0f136db7ee5ba32bfe5f79e460e","https://git.kernel.org/stable/c/40bf32dbfef866c83a3e74800b81d79e52b6d20b","https://git.kernel.org/stable/c/94869bb0de69a812f70231b0eb480bb2f7ae73a6","https://git.kernel.org/stable/c/c7a268b33882d5feaafd29c1734456f41ba41396","https://git.kernel.org/stable/c/1d7a5aae884ca727d41c7ed15d4c82fdb67c040c","https://git.kernel.org/stable/c/f2658d5966bcee8c3eb487875f459756d4f7cdfc","https://git.kernel.org/stable/c/0a692c625e373fef692ffbc7fc41f8a025f01cb7","https://git.kernel.org/stable/c/ebbb7bb9e80305820dc2328a371c1b35679f2667"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49055.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49055","state":"PUBLISHED","datePublished":"2025-02-26T01:54:27.771Z","dateUpdated":"2026-05-11T18:52:10.429Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.243Z"},"containers":{"cna":{"title":"drm/amdkfd: Check for potential null return of kmalloc_array()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check for potential null return of kmalloc_array()\n\nAs the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference.\nTherefore, it is better to check the return value of kmalloc_array() to avoid this confusion."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"32cf90a521dcc0f136db7ee5ba32bfe5f79e460e","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"40bf32dbfef866c83a3e74800b81d79e52b6d20b","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"94869bb0de69a812f70231b0eb480bb2f7ae73a6","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"c7a268b33882d5feaafd29c1734456f41ba41396","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"1d7a5aae884ca727d41c7ed15d4c82fdb67c040c","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"f2658d5966bcee8c3eb487875f459756d4f7cdfc","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"0a692c625e373fef692ffbc7fc41f8a025f01cb7","versionType":"git"},{"version":"f3a398183f7b9ef78f6b71ee9f7641e046403bcb","status":"affected","lessThan":"ebbb7bb9e80305820dc2328a371c1b35679f2667","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"4.9.311","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.276","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.239","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.190","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.112","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.35","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.4","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/32cf90a521dcc0f136db7ee5ba32bfe5f79e460e"},{"url":"https://git.kernel.org/stable/c/40bf32dbfef866c83a3e74800b81d79e52b6d20b"},{"url":"https://git.kernel.org/stable/c/94869bb0de69a812f70231b0eb480bb2f7ae73a6"},{"url":"https://git.kernel.org/stable/c/c7a268b33882d5feaafd29c1734456f41ba41396"},{"url":"https://git.kernel.org/stable/c/1d7a5aae884ca727d41c7ed15d4c82fdb67c040c"},{"url":"https://git.kernel.org/stable/c/f2658d5966bcee8c3eb487875f459756d4f7cdfc"},{"url":"https://git.kernel.org/stable/c/0a692c625e373fef692ffbc7fc41f8a025f01cb7"},{"url":"https://git.kernel.org/stable/c/ebbb7bb9e80305820dc2328a371c1b35679f2667"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:52:10.429Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.9.311"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.14.276"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.19.239"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.4.190"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.10.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.15.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.17.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.18"}]}]}],"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-2022-49055","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:50:06.598307Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:57:06.838Z"}}]}}}