[From nobody Sat Mar 21 08:35:07 2026
Received: (at submit) by bugs.debian.org; 15 Feb 2026 15:27:12 +0000
X-Spam-Checker-Version: SpamAssassin 4.0.1-bugs.debian.org_2005_01_02
 (2024-03-25) on buxtehude.debian.org
X-Spam-Level: 
X-Spam-Status: No, score=-8.6 required=4.0 tests=BAYES_00,FROMDEVELOPER,
 KHOP_HELO_FCRDNS,RCVD_IN_VALIDITY_CERTIFIED_BLOCKED,
 RCVD_IN_VALIDITY_RPBL_BLOCKED,RCVD_IN_VALIDITY_SAFE_BLOCKED,
 RDNS_DYNAMIC,SPF_HELO_NONE,SPF_NONE,XMAILER_REPORTBUG autolearn=ham
 autolearn_force=no version=4.0.1-bugs.debian.org_2005_01_02
X-Spam-Bayes: score:0.0000 Tokens: new, 21; hammy, 149; neutral, 41; spammy,
 1. spammytokens:0.942-+--H*r:bugs.debian.org
 hammytokens:0.000-+--H*F:U*carnil, 0.000-+--XDebbugsCc,
 0.000-+--X-Debbugs-Cc, 0.000-+--HTo:N*Debian, 0.000-+--H*Ad:N*Bug
Return-path: <carnil@debian.org>
Received: from c-82-192-244-13.customer.ggaweb.ch ([82.192.244.13]:52384
 helo=eldamar.lan) by buxtehude.debian.org with esmtp (Exim 4.96)
 (envelope-from <carnil@debian.org>) id 1vre1f-00CuGo-1q
 for submit@bugs.debian.org; Sun, 15 Feb 2026 15:27:12 +0000
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: jpeg-xl: CVE-2026-1837
Message-ID: <177116922718.1593349.10797309084322329380.reportbug@eldamar.lan>
X-Mailer: reportbug 13.2.0
Date: Sun, 15 Feb 2026 16:27:07 +0100
Delivered-To: submit@bugs.debian.org

Source: jpeg-xl
Version: 0.11.1-6
Severity: important
Tags: security upstream
Forwarded: https://github.com/libjxl/libjxl/issues/4549
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for jpeg-xl.

CVE-2026-1837[0]:
| A specially-crafted file can cause libjxl's decoder to write pixel
| data to uninitialized unallocated memory. Soon after that data from
| another uninitialized unallocated region is copied to pixel data.
| This can be done by requesting color transformation of grayscale
| images to another grayscale color space. Buffers allocated for
| 1-float-per-pixel are used as if they are allocated for 3-float-per-
| pixel. That happens only if LCMS2 is used as CMS engine. There is
| another CMS engine available (selected by build flags).


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-2026-1837
    https://www.cve.org/CVERecord?id=CVE-2026-1837
[1] https://github.com/libjxl/libjxl/issues/4549

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
]