CVE-2026-46006
Published: May 29, 2026Last modified: June 2, 2026
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 ]
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.175-r0) |
| 25 LTS | linux-lts | Fixed (6.12.87-r0) | |
| Stream | linux-lts | Fixed (6.12.87-r0) |
References
- https://git.kernel.org/stable/c/2fc87d37be1b730a149b035f9375fdb8cc5333a5
- https://git.kernel.org/stable/c/332884f5eb79dd60a7162b079d09d39208567a31
- https://git.kernel.org/stable/c/45a45184b9c0b0b26ead06e370cda2073616a7cc
- https://git.kernel.org/stable/c/573a1104bd36e49c067a9dc62e7c476d5ee7e92a
- https://git.kernel.org/stable/c/d749a9a0ee4014681487e7ae549901aa8c176637
- https://git.kernel.org/stable/c/e441d5c23ec644c8d27593db3b8928e8933512a9
- https://git.kernel.org/stable/c/fa297e919d1680c38ab268ff952b1698dac987f6