[Pkg-gnome-extras-maintainers] Bug#1145018: gegl: CVE-2026-18300

[Salvatore Bonaccorso]

Source: gegl
Version: 1:0.4.70-4
Severity: grave
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>
Control: found -1 1:0.4.62-2

Hi,

The following vulnerability was published for gegl.

CVE-2026-18300[0]:
| GIMP HDR File Parsing Integer Overflow Remote Code Execution
| Vulnerability. This vulnerability allows remote attackers to execute
| arbitrary code on affected installations of GIMP. User interaction
| is required to exploit this vulnerability in that the target must
| visit a malicious page or open a malicious file.  The specific flaw
| exists within the parsing of HDR files. The issue results from the
| lack of proper validation of user-supplied data, which can result in
| an integer overflow before allocating a buffer. An attacker can
| leverage this vulnerability to execute code in the context of the
| current process. Was ZDI-CAN-29289.


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-2026-18300
    https://www.cve.org/CVERecord?id=CVE-2026-18300
[1] https://www.zerodayinitiative.com/advisories/ZDI-26-453/
[2] https://gitlab.gnome.org/GNOME/gegl/-/commit/d3d262008299341c5b032b354021632ceadb2799

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore