Veille CVE
CVE-2026-89806
8.4 ÉlevéeDescription
In the Linux kernel, the following vulnerability has been resolved: drm/sysfb: ofdrm: Fix integer overflow in fb_size calculation The framebuffer size calculation `fb_size = linebytes * height` can overflow when both values are large (e.g., 46341 * 46341 > INT_MAX). Since linebytes and height are both int types, the multiplication is performed as int * int, which results in undefined behavior on overflow. Use check_mul_overflow() to detect and prevent this overflow, consistent with the approach used in simpledrm.c and corebootdrm.c.
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 8.4 Élevée | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Références
- https://git.kernel.org/stable/c/0cec951667a624fafaca2695c46042f45851caec
- https://git.kernel.org/stable/c/711fe7949d37656a5586244afee9523b9e5e37e9
- https://git.kernel.org/stable/c/c6f48e59ece0123f6a11527ad4d89b21c2d65b87
- https://git.kernel.org/stable/c/d9daf9a6e7a6f82ef338a09386eefc6807100d3f
- https://git.kernel.org/stable/c/ded6ad826fe0fd059333d3a3b3e1742c8e45ff41