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CVE-2023-52930: drm/i915: Fix potential bit_17 double-free

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-27 · updated 2026-06-17
• Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential bit_17 double-free A userspace with multiple threads racing I915_GEM_SET_TILING to set the tiling to I915_TILING_NONE could trigger a double free of the bit_17 bitmask. (Or conversely leak memory on the transition to tiled.) Move allocation/free'ing of the bitmask within the section protected by the obj lock. [tursulin: Correct fixes tag and added cc stable.] (cherry picked from commit 10e0cbaaf1104f449d695c80bcacf930dcd3c42e)

Affected products

• Linux kernel: from 5.5 before 5.10.168; from 5.11 before 5.15.93; from 5.16 before 6.1.11; 6.2-rc1, 6.2-rc2, 6.2-rc3, 6.2-rc4, 6.2-rc5, 6.2-rc6 — fixed in 5.10.168, 5.15.93, 6.1.11

How to fix

Upgrade to a fixed version: Linux kernel 5.10.168, 5.15.93, 6.1.11. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0769f997a7b6d5cb8336db0b4ec3d2d311b8097c
• https://git.kernel.org/stable/c/7057a8f126f14f14b040faecfa220fd27c6c2f85
• https://git.kernel.org/stable/c/b591abac78e25269b12e3d7170c99463f8c5cb02
• https://git.kernel.org/stable/c/e3ebc3e23bd9028a8a9a26cbc5985f99be445f65

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