High 7.8Published May 27, 2026

CVE-2026-46006drm/nouveau: fix u32 overflow in pushbuf reloc bounds check

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

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Exploited in the last 30 days

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 ]

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from a1606a9596e54da90ad6209071b357a4c1b0fa82 before 3429275684f4bad42876955301f3c5c814aae909; from a1606a9596e54da90ad6209071b357a4c1b0fa82 before 573a1104bd36e49c067a9dc62e7c476d5ee7e92a; from a1606a9596e54da90ad6209071b357a4c1b0fa82 before 45a45184b9c0b0b26ead06e370cda2073616a7cc; from a1606a9596e54da90ad6209071b357a4c1b0fa82 before fa297e919d1680c38ab268ff952b1698dac987f6; from a1606a9596e54da90ad6209071b357a4c1b0fa82 before d749a9a0ee4014681487e7ae549901aa8c176637; from a1606a9596e54da90ad6209071b357a4c1b0fa82 before 332884f5eb79dd60a7162b079d09d39208567a31; from a1606a9596e54da90ad6209071b357a4c1b0fa82 before e441d5c23ec644c8d27593db3b8928e8933512a9; from a1606a9596e54da90ad6209071b357a4c1b0fa82 before 2fc87d37be1b730a149b035f9375fdb8cc5333a5	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.34 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/3429275684f4bad42876955301f3c5c814aae909
https://git.kernel.org/stable/c/573a1104bd36e49c067a9dc62e7c476d5ee7e92a	patch
https://git.kernel.org/stable/c/45a45184b9c0b0b26ead06e370cda2073616a7cc	patch
https://git.kernel.org/stable/c/fa297e919d1680c38ab268ff952b1698dac987f6	patch
https://git.kernel.org/stable/c/d749a9a0ee4014681487e7ae549901aa8c176637	patch
https://git.kernel.org/stable/c/332884f5eb79dd60a7162b079d09d39208567a31	patch
https://git.kernel.org/stable/c/e441d5c23ec644c8d27593db3b8928e8933512a9	patch
https://git.kernel.org/stable/c/2fc87d37be1b730a149b035f9375fdb8cc5333a5	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.