CVE-2026-12912
Published: July 1, 2026Last modified: July 8, 2026
Description
A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.3 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | tiff | Unknown (4.4.0-r1) |
| 25 LTS | tiff | Unknown (4.7.0-r0) | |
| Stream | tiff | Fixed (4.7.2-r0) |
References
- https://access.redhat.com/errata/RHSA-2026:34890
- https://access.redhat.com/errata/RHSA-2026:41892
- https://access.redhat.com/security/cve/CVE-2026-12912
- https://bugzilla.redhat.com/show_bug.cgi?id=2492871
- https://gitlab.com/libtiff/libtiff/-/merge_requests/873
- https://gitlab.com/libtiff/libtiff/-/work_items/824
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12912.json