Local memory corruption via i915 self-test overflow
Published Feb 26, 2025 · Updated May 11, 2026
Out-of-bounds write in Linux kernel 4.12 through 5.18.12 allows local users to corrupt memory through i915 self-tests. In pot_hole() in drivers/gpu/drm/i915/selftests/i915_gem_gtt.c, the loop condition subtracts twice the minimum alignment from a small hole_end value, while addr increments can also wrap, allowing the loop to process an invalid address. Reachability requires local low-privileged access and execution of the i915 mock self-test path on an affected kernel; the public record identifies no network trigger or demonstrated exploit.
Summary
What happened
Out-of-bounds write in Linux kernel 4.12 through 5.18.12 allows local users to corrupt memory through i915 self-tests. In pot_hole() in drivers/gpu/drm/i915/selftests/i915_gem_gtt.c, the loop condition subtracts twice the minimum alignment from a small hole_end value, while addr increments can also wrap, allowing the loop to process an invalid address. Reachability requires local low-privileged access and execution of the i915 mock self-test path on an affected kernel; the public record identifies no network trigger or demonstrated exploit.
The record
- CVE
- CVE-2022-49635
- Published
- Feb 26, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-787
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 26, 2025CVE publishedPublication date reported by the CVE source.
- May 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
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Is a vulnerable build present?
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- Affected versionversion=4.12
- Affected versionversion=e1c5f754067b594de58d387aa5873dec83b6c9fd <333991c4e66b3d4b5613315f18016da80344f659
- Affected versionversion=e1c5f754067b594de58d387aa5873dec83b6c9fd <e8997d2d6b8d764e12489f1af2a1ce1d7384ca2a
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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Your stack
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