JLSEC-2025-303 Medium 5.5

A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the...

JLSEC Published: Nov 25, 2025
Modified: Jul 23, 2026
Severity: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Packages: Libtiff_jll < 4.5.1+0
Upstream: CVE-2023-2731

A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the libtiff/tif_lzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or denial of service.

References

https://access.redhat.com/security/cve/CVE-2023-2731
https://bugzilla.redhat.com/show_bug.cgi?id=2207635
https://github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e9527b
https://gitlab.com/libtiff/libtiff/-/issues/548
https://security.netapp.com/advisory/ntap-20230703-0009/