{"id":"CVE-2025-71302","state":"PUBLISHED","title":"drm/panthor: fix for dma-fence safe access rules","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: fix for dma-fence safe access rules\n\nCommit 506aa8b02a8d6 (\"dma-fence: Add safe access helpers and document\nthe rules\") details the dma-fence safe access rules. The most common\nculprit is that drm_sched_fence_get_timeline_name may race with\ngroup_free_queue.","publishedAt":"2026-05-08T13:26:11.418Z","updatedAt":"2026-08-05T12:12:44.474Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"de85488138247d034eb3241840424a54d660926b","status":"affected","lessThan":"ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2","versionType":"git"},{"version":"de85488138247d034eb3241840424a54d660926b","status":"affected","lessThan":"eae60933abd11df013876f647c9edbd35ce67615","versionType":"git"},{"version":"de85488138247d034eb3241840424a54d660926b","status":"affected","lessThan":"efe24898485c5c831e629d9c6fb9350c35cb576f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/panthor/panthor_sched.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/panthor/panthor_sched.c"]}],"references":["https://git.kernel.org/stable/c/ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2","https://git.kernel.org/stable/c/eae60933abd11df013876f647c9edbd35ce67615","https://git.kernel.org/stable/c/efe24898485c5c831e629d9c6fb9350c35cb576f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/71xxx/CVE-2025-71302.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71302","state":"PUBLISHED","datePublished":"2026-05-08T13:26:11.418Z","dateUpdated":"2026-08-05T12:12:44.474Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-08T13:14:33.087Z"},"containers":{"cna":{"title":"drm/panthor: fix for dma-fence safe access rules","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: fix for dma-fence safe access rules\n\nCommit 506aa8b02a8d6 (\"dma-fence: Add safe access helpers and document\nthe rules\") details the dma-fence safe access rules. The most common\nculprit is that drm_sched_fence_get_timeline_name may race with\ngroup_free_queue."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"de85488138247d034eb3241840424a54d660926b","status":"affected","lessThan":"ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2","versionType":"git"},{"version":"de85488138247d034eb3241840424a54d660926b","status":"affected","lessThan":"eae60933abd11df013876f647c9edbd35ce67615","versionType":"git"},{"version":"de85488138247d034eb3241840424a54d660926b","status":"affected","lessThan":"efe24898485c5c831e629d9c6fb9350c35cb576f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/panthor/panthor_sched.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/panthor/panthor_sched.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2"},{"url":"https://git.kernel.org/stable/c/eae60933abd11df013876f647c9edbd35ce67615"},{"url":"https://git.kernel.org/stable/c/efe24898485c5c831e629d9c6fb9350c35cb576f"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - An attacker reaches the flaw through DRM ioctls on a local Panthor render node and SYNC_IOC_FILE_INFO on an exported sync-file.\nAC:L - The attacker controls both sides by querying the exported fence concurrently with GROUP_DESTROY or file closure and can repeat the race while spraying reclaimed heap objects.\nPR:L - All required Panthor, syncobj, and export operations are DRM_RENDER_ALLOW; ordinary-priority groups require neither DRM master nor a capability.\nUI:N - The attacker independently creates the VM, group, job, syncobj, and sync-file and triggers teardown without victim action.\nS:U - The vulnerability compromises resources governed by the same host kernel and does not inherently cross a VM or IOMMU security boundary.\nC:H - The exported scheduler fence can outlive the freed queue, allowing the timeline callback to dereference reclaimed scheduler and name data. Heap reclamation can provide a chosen source pointer whose contents are copied through SYNC_IOC_FILE_INFO, supporting repeated kernel-memory disclosure.\nI:H - This is a kernel heap use-after-free involving surviving dma-fence references into reclaimed queue state. Under conservative UAF scoring, attacker-influenced heap reuse is treated as potentially enabling arbitrary memory modification or control-flow hijacking.\nA:H - Dereferencing a stale or attacker-influenced scheduler-name pointer can cause a kernel fault, oops, or panic, and an unprivileged attacker can trigger the condition repeatedly."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:12:44.474Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}