Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 before 0cec951667a624fafaca2695c46042f45851caec; affected c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 before 711fe7949d37656a5586244afee9523b9e5e37e9; affected c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 before ded6ad826fe0fd059333d3a3b3e1742c8e45ff41; affected c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 before d9daf9a6e7a6f82ef338a09386eefc6807100d3f; affected c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 before c6f48e59ece0123f6a11527ad4d89b21c2d65b87 |
| Linux / Linux | affected 6.2; unaffected 0 before 6.2; unaffected 6.6.160 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0cec951667a624fafaca2695c46042f45851caec
- https://git.kernel.org/stable/c/711fe7949d37656a5586244afee9523b9e5e37e9
- https://git.kernel.org/stable/c/ded6ad826fe0fd059333d3a3b3e1742c8e45ff41
- https://git.kernel.org/stable/c/d9daf9a6e7a6f82ef338a09386eefc6807100d3f
- https://git.kernel.org/stable/c/c6f48e59ece0123f6a11527ad4d89b21c2d65b87