{"id":"CVE-2025-71099","state":"PUBLISHED","title":"drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()\n\nIn xe_oa_add_config_ioctl(), we accessed oa_config->id after dropping\nmetrics_lock. Since this lock protects the lifetime of oa_config, an\nattacker could guess the id and call xe_oa_remove_config_ioctl() with\nperfect timing, freeing oa_config before we dereference it, leading to\na potential use-after-free.\n\nFix this by caching the id in a local variable while holding the lock.\n\nv2: (Matt A)\n- Dropped mutex_unlock(&oa->metrics_lock) ordering change from\n  xe_oa_remove_config_ioctl()\n\n(cherry picked from commit 28aeaed130e8e587fd1b73b6d66ca41ccc5a1a31)","publishedAt":"2026-01-13T15:34:58.359Z","updatedAt":"2026-10-19T18:15:13.054Z","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":"cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0","status":"affected","lessThan":"c6d30b65b7a44dac52ad49513268adbf19eab4a2","versionType":"git"},{"version":"cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0","status":"affected","lessThan":"7cdb9a9da935c687563cc682155461fef5f9b48d","versionType":"git"},{"version":"cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0","status":"affected","lessThan":"dcb171931954c51a1a7250d558f02b8f36570783","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_oa.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.4","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","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/xe/xe_oa.c"]}],"references":["https://git.kernel.org/stable/c/c6d30b65b7a44dac52ad49513268adbf19eab4a2","https://git.kernel.org/stable/c/7cdb9a9da935c687563cc682155461fef5f9b48d","https://git.kernel.org/stable/c/dcb171931954c51a1a7250d558f02b8f36570783"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/71xxx/CVE-2025-71099.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71099","state":"PUBLISHED","datePublished":"2026-01-13T15:34:58.359Z","dateUpdated":"2026-10-19T18:15:13.054Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:30:19.650Z"},"containers":{"cna":{"title":"drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()\n\nIn xe_oa_add_config_ioctl(), we accessed oa_config->id after dropping\nmetrics_lock. Since this lock protects the lifetime of oa_config, an\nattacker could guess the id and call xe_oa_remove_config_ioctl() with\nperfect timing, freeing oa_config before we dereference it, leading to\na potential use-after-free.\n\nFix this by caching the id in a local variable while holding the lock.\n\nv2: (Matt A)\n- Dropped mutex_unlock(&oa->metrics_lock) ordering change from\n  xe_oa_remove_config_ioctl()\n\n(cherry picked from commit 28aeaed130e8e587fd1b73b6d66ca41ccc5a1a31)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0","status":"affected","lessThan":"c6d30b65b7a44dac52ad49513268adbf19eab4a2","versionType":"git"},{"version":"cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0","status":"affected","lessThan":"7cdb9a9da935c687563cc682155461fef5f9b48d","versionType":"git"},{"version":"cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0","status":"affected","lessThan":"dcb171931954c51a1a7250d558f02b8f36570783","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_oa.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.4","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","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/xe/xe_oa.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c6d30b65b7a44dac52ad49513268adbf19eab4a2"},{"url":"https://git.kernel.org/stable/c/7cdb9a9da935c687563cc682155461fef5f9b48d"},{"url":"https://git.kernel.org/stable/c/dcb171931954c51a1a7250d558f02b8f36570783"}],"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 - The vulnerability is reached through DRM_XE_OBSERVATION add/remove ioctls on a local Xe DRM device node; no network or physical path exists.\nAC:L - The attacker controls concurrent add and remove operations, and IDs are predictable because the IDR starts at 1 and selects the lowest available value. The race can be attempted repeatedly without relying on victim-controlled state.\nPR:L - The supported observation_paranoid=0 configuration permits ordinary render-node clients without capabilities. Although the default requires initial-namespace CAP_PERFMON or CAP_SYS_ADMIN, the higher-severity reasonable deployment requires only an unprivileged local account with device access.\nUI:N - The attacker triggers both sides of the race directly through concurrent ioctls, without any victim action.\nS:U - Exploitation affects the host kernel within its existing security authority and does not inherently cross a VM, IOMMU, or separate authorization boundary.\nC:H - The stale oa_config can be dereferenced after RCU reclamation and attacker-directed slab reuse, potentially exposing kernel memory through the reclaimed ID or debug UUID accesses.\nI:H - The use-after-free permits attacker-influenced heap reuse and must be treated as potentially yielding memory-corruption primitives, arbitrary writes, or kernel code execution.\nA:H - Dereferencing reclaimed or poisoned slab memory can cause a kernel oops or panic, and the attacker can repeatedly trigger the race."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:12:04.137Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.18.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-71099","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-16T15:05:43.168624Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","type":"CWE","description":"CWE-416 Use After Free"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T18:15:13.054Z"}}]}}}