drm/sysfb: ofdrm: Fix integer overflow in fb_size calculation
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.160, 6.12.112, 6.18.51, 7.2.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 · fixed in 0cec951667a624fafaca2695c46042f45851caec; From c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 · fixed in 711fe7949d37656a5586244afee9523b9e5e37e9; From c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 · fixed in ded6ad826fe0fd059333d3a3b3e1742c8e45ff41; From c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 · fixed in d9daf9a6e7a6f82ef338a09386eefc6807100d3f; From c8a17756c42581ba1a567d1dd3b69e8f5619a7d8 · fixed in c6f48e59ece0123f6a11527ad4d89b21c2d65b87
- Linux Linux
6.2
- KernelLinux
From 6.2.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.51; From 6.19.0 · fixed in 7.2.5