Bug#1133923: libexif: CVE-2026-40386

[Salvatore Bonaccorso]

Source: libexif
Version: 0.6.25-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for libexif.

CVE-2026-40386[0]:
| In libexif through 0.6.25, an integer underflow in size checking for
| Fuji and Olympus MakerNote decoding could be used by attackers to
| crash or leak information out of libexif-using programs.


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-2026-40386
    https://www.cve.org/CVERecord?id=CVE-2026-40386
[1] https://github.com/libexif/libexif/commit/dc6eac6e9655d14d0779d99e82d0f5f442d2f34b

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore