Description
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.
Metrics
CVSS 3.1 8.4/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c8a17756c42581ba1a567d1dd3b69e8f5619a7d8, < 0cec951667a624fafaca2695c46042f45851caec; >= c8a17756c42581ba1a567d1dd3b69e8f5619a7d8, < 711fe7949d37656a5586244afee9523b9e5e37e9; >= c8a17756c42581ba1a567d1dd3b69e8f5619a7d8, < ded6ad826fe0fd059333d3a3b3e1742c8e45ff41; >= c8a17756c42581ba1a567d1dd3b69e8f5619a7d8, < d9daf9a6e7a6f82ef338a09386eefc6807100d3f; >= c8a17756c42581ba1a567d1dd3b69e8f5619a7d8, < c6f48e59ece0123f6a11527ad4d89b21c2d65b87 |
| Linux | Linux | 6.2 |
References
- 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
Timeline
- Published
- Sep 16, 2026
- Last modified
- Oct 21, 2026
- NVD status
- Received