CVE-2026-46006

drm/nouveau: fix u32 overflow in pushbuf reloc bounds check

HIGH

7.8

CVSS Score

Published: May 27, 2026 at 12:56 PM UTC

Updated: August 5, 2026 at 01:24 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix u32 overflow in pushbuf reloc bounds check nouveau_gem_pushbuf_reloc_apply() validates each relocation with if (r->reloc_bo_offset + 4 > nvbo->bo.base.size) but reloc_bo_offset is __u32 (uapi/drm/nouveau_drm.h) and the integer literal 4 promotes to unsigned int, so the addition is performed in 32 bits and wraps before the comparison against the size_t bo size. Cast to u64 so the addition happens in 64-bit arithmetic. [ Add Fixes: tag. - Danilo ]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.34 ≤ v < 5.10.2592.6.34 ≤ v < 5.15.2092.6.34 ≤ v < 6.1.1752.6.34 ≤ v < 6.12.862.6.34 ≤ v < 6.18.272.6.34 ≤ v < 6.6.1402.6.34 ≤ v < 7.0.42.6.34 ≤ v < 7.15.16 ≤ v < 6.1.1756.13 ≤ v < 6.18.276.19 ≤ v < 7.0.46.2 ≤ v < 6.6.1406.7 ≤ v < 6.12.862.6.34a1606a9596e54da90ad6209071b357a4c1b0fa82

Vendor states this is fixed in 2fc87d37be1b730a149b035f9375fdb8cc5333a5 (fixed)

Vendor states this is fixed in 332884f5eb79dd60a7162b079d09d39208567a31 (fixed)

Vendor states this is fixed in 3429275684f4bad42876955301f3c5c814aae909 (fixed)

Vendor states this is fixed in 45a45184b9c0b0b26ead06e370cda2073616a7cc (fixed)

Vendor states this is fixed in 573a1104bd36e49c067a9dc62e7c476d5ee7e92a (fixed)

Vendor states this is fixed in d749a9a0ee4014681487e7ae549901aa8c176637 (fixed)

Vendor states this is fixed in e441d5c23ec644c8d27593db3b8928e8933512a9 (fixed)

Vendor states this is fixed in fa297e919d1680c38ab268ff952b1698dac987f6 (fixed)

Vendor states this is fixed in 2.6.34 (unaffected)

Vendor states this is fixed in 5.10.259 (unaffected)

Vendor states this is fixed in 5.15.209 (unaffected)

Vendor states this is fixed in 6.1.175 (unaffected)