{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68264", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.378Z", "datePublished": "2026-08-10T12:01:38.686Z", "dateUpdated": "2026-08-13T22:42:34.181Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-13T22:42:34.181Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/pt: Reset current_op in xe_pt_update_ops_init()\n\nxe_pt_update_ops_init() fails to reset current_op to 0. On the\nvm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside\nthe xe_validation_guard() / drm_exec_until_all_locked() loop. When\nthat loop retries due to lock contention or OOM eviction\n(drm_exec_retry_on_contention() / xe_validation_retry_on_oom()),\nxe_pt_update_ops_prepare() runs again on the same vops, and each\ncall to bind_op_prepare() increments current_op without resetting it.\n\nAfter N retries current_op exceeds the array size allocated by\nxe_vma_ops_alloc(), causing an out-of-bounds write into\nSLUB-poisoned memory and a subsequent UAF crash in\nxe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind.\n\nAlso reset needs_svm_lock and needs_invalidation which are derived in\nthe same prepare pass and would otherwise cause wrong migrate ops\nselection and redundant TLB invalidation on retry.\n\nFix this by resetting current_op, needs_svm_lock and needs_invalidation\nin xe_pt_update_ops_init().\n\nv2 (Matt):\n - Add details in commit message.\n - Add Fixes tag and Cc to [email protected]\n\n(cherry picked from commit 046045543e530605c441063535e7dca0075369a6)"}], "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 bug is reached through the DRM_IOCTL_XE_VM_BIND ioctl on an Intel Xe DRM render node (/dev/dri/renderD*), which requires local access to the device file; there is no remote or adjacent-network path.\nAC:L - The overflow needs only one retry of the xe_validation_guard()/drm_exec_until_all_locked() loop, and the attacker drives both retry sources itself: concurrent vm_bind/exec threads on the same BOs force drm_exec_retry_on_contention(), and filling VRAM forces xe_validation_retry_on_oom(). Both sides of the race are attacker-controlled and the sequence is repeatable at will.\nPR:L - Only an open file descriptor on the Xe render node plus a VM created via DRM_IOCTL_XE_VM_CREATE is needed; no capability check exists on the vm_bind path. Render nodes are routinely accessible to unprivileged users, Android apps, containers and GPU-sharing tenants.\nUI:N - The attacker performs the entire sequence (vm create, bo create, vm_bind with induced contention/memory pressure) from its own process; no victim action is required.\nS:U - The out-of-bounds write and the subsequent corrupted-pointer use occur in kernel heap memory within the same security authority as the kernel itself; no VM, IOMMU or sandbox boundary is crossed by the flaw itself.\nC:H - After the index inflates, xe_pt_update_ops_fini()/xe_pt_update_ops_abort() iterate i < current_op and read adjacent-slab contents as xe_vma/pt pointers and num_entries, and xe_migrate_update_pgtables_cpu() consumes the corrupted pt_op, giving out-of-bounds reads of kernel objects and a UAF that can be groomed into an arbitrary-read primitive.\nI:H - Each retry writes a full struct xe_vm_pgtable_update_op (pointer-rich entries[] plus vma pointer and flags) past the end of the kmalloc'd ops array, with attacker-chosen overflow length and slab size, and the corrupted entries are later fed to xe_pt_free_bind()/xe_pt_abort_bind() and GPU page-table programming \u2014 a controllable heap corruption suitable for privilege escalation.\nA:H - The commit documents an out-of-bounds write into SLUB-poisoned memory followed by a UAF crash in xe_migrate_update_pgtables_cpu(); an unprivileged process can reliably and repeatedly panic the kernel, and corrupted page-table state additionally wedges the GPU."}]}], "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_pt.c"], "versions": [{"version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "lessThan": "be5c39730ab8f1dfe59983bf7d8e3705541d1fee", "status": "affected", "versionType": "git"}, {"version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "lessThan": "157b1e3384d7d37f59c0c2b2ff2af8f557db1daa", "status": "affected", "versionType": "git"}, {"version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "lessThan": "90e4fd331b980259c40118d05b89b0ec514e7c48", "status": "affected", "versionType": "git"}, {"version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "lessThan": "6384271ac1ac0099198d15df79212a19ebdb929d", "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_pt.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc4", "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": "6.12", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2-rc4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/be5c39730ab8f1dfe59983bf7d8e3705541d1fee"}, {"url": "https://git.kernel.org/stable/c/157b1e3384d7d37f59c0c2b2ff2af8f557db1daa"}, {"url": "https://git.kernel.org/stable/c/90e4fd331b980259c40118d05b89b0ec514e7c48"}, {"url": "https://git.kernel.org/stable/c/6384271ac1ac0099198d15df79212a19ebdb929d"}], "title": "drm/xe/pt: Reset current_op in xe_pt_update_ops_init()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/xe/xe_pt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "be5c39730ab8f1dfe59983bf7d8e3705541d1fee", "status": "affected", "version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "versionType": "git"}, {"lessThan": "157b1e3384d7d37f59c0c2b2ff2af8f557db1daa", "status": "affected", "version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "versionType": "git"}, {"lessThan": "90e4fd331b980259c40118d05b89b0ec514e7c48", "status": "affected", "version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "versionType": "git"}, {"lessThan": "6384271ac1ac0099198d15df79212a19ebdb929d", "status": "affected", "version": "e8babb280b5ef904df54b3a90e5a7e3a9600c4a9", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/xe/xe_pt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc4", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/pt: Reset current_op in xe_pt_update_ops_init()\n\nxe_pt_update_ops_init() fails to reset current_op to 0. On the\nvm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside\nthe xe_validation_guard() / drm_exec_until_all_locked() loop. When\nthat loop retries due to lock contention or OOM eviction\n(drm_exec_retry_on_contention() / xe_validation_retry_on_oom()),\nxe_pt_update_ops_prepare() runs again on the same vops, and each\ncall to bind_op_prepare() increments current_op without resetting it.\n\nAfter N retries current_op exceeds the array size allocated by\nxe_vma_ops_alloc(), causing an out-of-bounds write into\nSLUB-poisoned memory and a subsequent UAF crash in\nxe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind.\n\nAlso reset needs_svm_lock and needs_invalidation which are derived in\nthe same prepare pass and would otherwise cause wrong migrate ops\nselection and redundant TLB invalidation on retry.\n\nFix this by resetting current_op, needs_svm_lock and needs_invalidation\nin xe_pt_update_ops_init().\n\nv2 (Matt):\n - Add details in commit message.\n - Add Fixes tag and Cc to [email protected]\n\n(cherry picked from commit 046045543e530605c441063535e7dca0075369a6)"}], "id": "CVE-2026-68264", "lastModified": "2026-08-13T23:17:27.127", "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"}]}, "published": "2026-08-10T13:20:15.257", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/157b1e3384d7d37f59c0c2b2ff2af8f557db1daa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6384271ac1ac0099198d15df79212a19ebdb929d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/90e4fd331b980259c40118d05b89b0ec514e7c48"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/be5c39730ab8f1dfe59983bf7d8e3705541d1fee"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: drm/xe/pt: Reset current_op in xe_pt_update_ops_init()", "id": "2513452", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513452"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/xe/pt: Reset current_op in xe_pt_update_ops_init()\nxe_pt_update_ops_init() fails to reset current_op to 0. On the\nvm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside\nthe xe_validation_guard() / drm_exec_until_all_locked() loop. When\nthat loop retries due to lock contention or OOM eviction\n(drm_exec_retry_on_contention() / xe_validation_retry_on_oom()),\nxe_pt_update_ops_prepare() runs again on the same vops, and each\ncall to bind_op_prepare() increments current_op without resetting it.\nAfter N retries current_op exceeds the array size allocated by\nxe_vma_ops_alloc(), causing an out-of-bounds write into\nSLUB-poisoned memory and a subsequent UAF crash in\nxe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind.\nAlso reset needs_svm_lock and needs_invalidation which are derived in\nthe same prepare pass and would otherwise cause wrong migrate ops\nselection and redundant TLB invalidation on retry.\nFix this by resetting current_op, needs_svm_lock and needs_invalidation\nin xe_pt_update_ops_init().\nv2 (Matt):\n- Add details in commit message.\n- Add Fixes tag and Cc to [email protected]\n(cherry picked from commit 046045543e530605c441063535e7dca0075369a6)", "A flaw was found in the Linux kernel's drm/xe/pt module. During certain memory management operations, an internal counter is not properly reset. Repeated attempts to perform these operations, possibly due to resource contention or out-of-memory conditions, can cause this counter to exceed its allocated bounds. This leads to an out-of-bounds write and a subsequent use-after-free vulnerability, which can result in a system crash, causing a denial of service."], "name": "CVE-2026-68264", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68264\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68264\nhttps://lore.kernel.org/linux-cve-announce/2026081023-CVE-2026-68264-6281@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e8babb280b5ef904df54b3a90e5a7e3a9600c4a9,be5c39730ab8f1dfe59983bf7d8e3705541d1fee]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e8babb280b5ef904df54b3a90e5a7e3a9600c4a9,157b1e3384d7d37f59c0c2b2ff2af8f557db1daa]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e8babb280b5ef904df54b3a90e5a7e3a9600c4a9,90e4fd331b980259c40118d05b89b0ec514e7c48]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e8babb280b5ef904df54b3a90e5a7e3a9600c4a9,6384271ac1ac0099198d15df79212a19ebdb929d]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.44,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T17:45:04.459702+00:00", "updated": "2026-08-14T00:30:03.792545+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}