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