Linux Kernel up to 6.12.102/6.18.43/7.1.5/7.2-rc3 xe_pt drm/xe/pt xe_pt_update_ops_init out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.53

Summaryinfo

A vulnerability categorized as very critical has been discovered in Linux Kernel up to 6.12.102/6.18.43/7.1.5/7.2-rc3. Affected by this vulnerability is the function xe_pt_update_ops_init of the file drm/xe/pt of the component xe_pt. Executing a manipulation can lead to out-of-bounds write. This vulnerability is registered as CVE-2026-68264. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability classified as very critical was found in Linux Kernel up to 6.12.102/6.18.43/7.1.5/7.2-rc3. This vulnerability affects the function xe_pt_update_ops_init of the file drm/xe/pt of the component xe_pt. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: drm/xe/pt: Reset current_op in xe_pt_update_ops_init() xe_pt_update_ops_init() fails to reset current_op to 0. On the vm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside the xe_validation_guard() / drm_exec_until_all_locked() loop. When that loop retries due to lock contention or OOM eviction (drm_exec_retry_on_contention() / xe_validation_retry_on_oom()), xe_pt_update_ops_prepare() runs again on the same vops, and each call to bind_op_prepare() increments current_op without resetting it. After N retries current_op exceeds the array size allocated by xe_vma_ops_alloc(), causing an out-of-bounds write into SLUB-poisoned memory and a subsequent UAF crash in xe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind. Also reset needs_svm_lock and needs_invalidation which are derived in the same prepare pass and would otherwise cause wrong migrate ops selection and redundant TLB invalidation on retry. Fix this by resetting current_op, needs_svm_lock and needs_invalidation in xe_pt_update_ops_init(). v2 (Matt): - Add details in commit message. - Add Fixes tag and Cc to [email protected] (cherry picked from commit 046045543e530605c441063535e7dca0075369a6)

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-68264 since 07/30/2026. The exploitation appears to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/10/2026).

Upgrading to version 6.12.103, 6.18.44, 7.1.6 or 7.2-rc4 eliminates this vulnerability. Applying the patch be5c39730ab8f1dfe59983bf7d8e3705541d1fee/157b1e3384d7d37f59c0c2b2ff2af8f557db1daa/90e4fd331b980259c40118d05b89b0ec514e7c48/6384271ac1ac0099198d15df79212a19ebdb929d is able to eliminate this problem.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.103/6.18.44/7.1.6/7.2-rc4
Patch: be5c39730ab8f1dfe59983bf7d8e3705541d1fee/157b1e3384d7d37f59c0c2b2ff2af8f557db1daa/90e4fd331b980259c40118d05b89b0ec514e7c48/6384271ac1ac0099198d15df79212a19ebdb929d

Timelineinfo

07/30/2026 CVE reserved
08/10/2026 +11 days Advisory disclosed
08/10/2026 +0 days VulDB entry created
08/10/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68264 (🔒)
GCVE (CVE): GCVE-0-2026-68264
GCVE (VulDB): GCVE-100-387640

Entryinfo

Created: 08/10/2026 17:04
Changes: 08/10/2026 17:04 (60)
Complete: 🔍
Cache ID: 216::103

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