Bug#1149063: libraw: CVE-2026-88387

[Salvatore Bonaccorso]

Source: libraw
Version: 0.22.1-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/LibRaw/LibRaw/issues/844
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for libraw.

CVE-2026-88387[0]:
| LibRaw 0.22.0 contains an incorrect numeric conversion vulnerability
| in LibRaw::parse_tiff_ifd() when processing TIFF tag 0x00fe
| (NewSubfileType). A specially crafted RAW, TIFF, or DNG file can
| supply an attacker-controlled NewSubfileType value outside the range
| of a signed int. The parser converts this value and narrows it to
| int without performing range validation. This out-of-range
| conversion triggers undefined behavior, resulting in process
| termination and denial of service.


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-2026-88387
    https://www.cve.org/CVERecord?id=CVE-2026-88387
[1] https://github.com/LibRaw/LibRaw/issues/844
[2] https://github.com/LibRaw/LibRaw/pull/853
[3] https://github.com/LibRaw/LibRaw/commit/b41cbbd61951783e0440590dae55411a16185bdf

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore