Source: emacs Version: 1:30.2+1-11 Severity: important Tags: security upstream Forwarded: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=81344 X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for emacs. CVE-2026-77219[0]: | GNU Emacs before 31.0.91 contains an integer overflow in the | PBM/PPM/PGM image loader that allows an attacker to leak heap memory | contents by supplying a crafted image with large dimensions and an | elevated max color index. The image loader multiplies image | dimensions and channel count using signed integer arithmetic; for | sufficiently large values, the result wraps to a negative number, | bypassing the bounds check and causing the pixel reader to access | heap memory past the end of the allocated buffer. The over-read | contents are interpreted as pixel color values and rendered on | screen. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-77219 https://www.cve.org/CVERecord?id=CVE-2026-77219 [1] https://debbugs.gnu.org/cgi/bugreport.cgi?bug=81344 [2] https://cgit.git.savannah.gnu.org/cgit/emacs.git/commit/?id=b07e634e4cf45162ae0178e32092b040587f2c6c Please adjust the affected versions in the BTS as needed. Regards, Salvatore
