{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53095","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-05-02T15:51:43.552Z","datePublished":"2025-05-02T15:55:39.661Z","dateUpdated":"2026-05-11T19:38:25.929Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:38:25.929Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/ttm: Fix a NULL pointer dereference\n\nThe LRU mechanism may look up a resource in the process of being removed\nfrom an object. The locking rules here are a bit unclear but it looks\ncurrently like res->bo assignment is protected by the LRU lock, whereas\nbo->resource is protected by the object lock, while *clearing* of\nbo->resource is also protected by the LRU lock. This means that if\nwe check that bo->resource points to the LRU resource under the LRU\nlock we should be safe.\nSo perform that check before deciding to swap out a bo. That avoids\ndereferencing a NULL bo->resource in ttm_bo_swapout()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/ttm/ttm_device.c"],"versions":[{"version":"6a9b028994025f5033f10d1da30b29dfdc713384","lessThan":"9ba1720f6c4a0f13c3f3cb5c28132ee75555d04f","status":"affected","versionType":"git"},{"version":"6a9b028994025f5033f10d1da30b29dfdc713384","lessThan":"9d9b1f9f7a72d83ebf173534e76b246349f32374","status":"affected","versionType":"git"},{"version":"6a9b028994025f5033f10d1da30b29dfdc713384","lessThan":"9a9a8fe26751334b7739193a94eba741073b8a55","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/ttm/ttm_device.c"],"versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","status":"unaffected","versionType":"semver"},{"version":"6.1.21","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.8","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3","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":"5.19","versionEndExcluding":"6.1.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9ba1720f6c4a0f13c3f3cb5c28132ee75555d04f"},{"url":"https://git.kernel.org/stable/c/9d9b1f9f7a72d83ebf173534e76b246349f32374"},{"url":"https://git.kernel.org/stable/c/9a9a8fe26751334b7739193a94eba741073b8a55"}],"title":"drm/ttm: Fix a NULL pointer dereference","x_generator":{"engine":"bippy-1.2.0"}}}}