uclouvain openjpeg pi.c opj_pi_initialise_encode integer overflow

[nixpkgs-security-tracker]

• CVE-2026-6192
• Nixpkgs security tracker issue
• affected package maintainers: cc @codyopel

Description

A vulnerability was identified in uclouvain openjpeg up to 2.5.4. This impacts the function opj_pi_initialise_encode in the library src/lib/openjp2/pi.c. The manipulation leads to integer overflow. The attack must be carried out locally. The exploit is publicly available and might be used. The identifier of the patch is 839936aa33eb8899bbbd80fda02796bb65068951. It is suggested to install a patch to address this issue.

References

• Integer Overflow in opj_pi_initialise_encode() leads to Heap Buffer Overflow uclouvain/openjpeg#1619 (issue-tracking, exploit)
• opj_pi_initialise_encode() (write code path): avoid potential integer… uclouvain/openjpeg#1628 (issue-tracking, patch)
• uclouvain/openjpeg@839936a (patch)

3.3 LOW | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

• CVSS version: 3.1
• Attack Vector (AV): Local (L)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): Low (L)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): None (N)
• Integrity (I): None (N)
• Availability (A): Low (L)
• Exploit Code Maturity (E): Proof-of-Concept (P)
• Remediation Level (RL): Official Fix (O)
• Report Confidence (RC): Confirmed (C)

Affected packages

• openjpeg (2.5.4@nixos-25.11, 2.5.4@nixos-unstable)

[Vsanga87]

It's ok