CVE-2025-71099

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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)"}], "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."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/xe/xe_oa.c"], "versions": [{"version": "cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0", "lessThan": "c6d30b65b7a44dac52ad49513268adbf19eab4a2", "status": "affected", "versionType": "git"}, {"version": "cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0", "lessThan": "7cdb9a9da935c687563cc682155461fef5f9b48d", "status": "affected", "versionType": "git"}, {"version": "cdf02fe1a94a768cbcd20f5c4e1a1d805f4a06c0", "lessThan": "dcb171931954c51a1a7250d558f02b8f36570783", "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/xe/xe_oa.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.64", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.4", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "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": "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"}]}]}], "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"}], "title": "drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"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": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T18:15:13.054Z"}}]}}

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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)"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/xe/oa: Corrige un potencial uso despu\u00e9s de liberaci\u00f3n en xe_oa_add_config_ioctl()\n\nEn xe_oa_add_config_ioctl(), accedimos a oa_config->id despu\u00e9s de liberar metrics_lock. Dado que este bloqueo protege la vida \u00fatil de oa_config, un atacante podr\u00eda adivinar el id y llamar a xe_oa_remove_config_ioctl() con una sincronizaci\u00f3n perfecta, liberando oa_config antes de que lo desreferenciemos, lo que lleva a un potencial uso despu\u00e9s de liberaci\u00f3n.\n\nEsto se corrige al almacenar en cach\u00e9 el id en una variable local mientras se mantiene el bloqueo.\n\nv2: (Matt A)\n- Se elimin\u00f3 el cambio de orden de mutex_unlock(&oa->metrics_lock) de xe_oa_remove_config_ioctl()\n\n(cherry picked from commit 28aeaed130e8e587fd1b73b6d66ca41ccc5a1a31)"}], "id": "CVE-2025-71099", "lastModified": "2026-10-19T19:17:11.953", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-71099", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:05:43.168624Z", "version": "2.0.3"}}]}, "published": "2026-01-13T16:16:09.820", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7cdb9a9da935c687563cc682155461fef5f9b48d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c6d30b65b7a44dac52ad49513268adbf19eab4a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dcb171931954c51a1a7250d558f02b8f36570783"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()", "id": "2429059", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429059"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()\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.\nFix this by caching the id in a local variable while holding the lock.\nv2: (Matt A)\n- Dropped mutex_unlock(&oa->metrics_lock) ordering change from\nxe_oa_remove_config_ioctl()\n(cherry picked from commit 28aeaed130e8e587fd1b73b6d66ca41ccc5a1a31)"], "name": "CVE-2025-71099", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-01-13T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-71099\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-71099\nhttps://lore.kernel.org/linux-cve-announce/2026011345-CVE-2025-71099-b6f8@gregkh/T"], "threat_severity": "Low"}

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