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Fencer Vulns
critical 9.8

CVE-2024-11403 json

Out of Bounds Memory Read/Write in libjxl

published 2024-11-25 23 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-33796

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

There exists an out of bounds read/write in LibJXL versions prior to commit 9cc451b91b74ba470fd72bd48c121e9f33d24c99. The JPEG decoder used by the JPEG XL encoder when doing JPEG recompression (i.e. if using JxlEncoderAddJPEGFrame on untrusted input) does not properly check bounds in the presence of incomplete codes. This could lead to an out-of-bounds write. In jpegli which is released as part of the same project, the same vulnerability is present. However, the relevant buffer is part of a bigger structure, and the code makes no assumptions on the values that could be overwritten. The issue could however cause jpegli to read uninitialised memory, or addresses of functions.

Patch / fix

  • libjxl libjxl 9cc451b91b74ba470fd72bd48c121e9f33d24c99
  • jpeg-xl Debian 12 0.7.0-10+deb12u1
  • jpeg-xl Debian 14, Debian 13 0.10.4-2

debian advisories DEBIAN-CVE-2024-11403

  • jpeg-xl Ubuntu 24.04 LTS 0.7.0-10.2ubuntu6.1

ubuntu advisories UBUNTU-CVE-2024-11403

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libjxl SLE Module for Package Hub 15 SP7 0.10.3-150700.4.3.1
  • mozjs115 SLE Module for Desktop Applications 15 SP6, openSUSE Leap 15.6 115.4.0-150600.3.6.1

suse advisories SUSE-SU-2025:01883-1SUSE-SU-2024:4411-1

  • libjxl Package Hub 15 SP6, openSUSE Leap 15.6 0.8.4-bp156.3.3.4
  • libjxl-gtk Package Hub 15 SP6, openSUSE Leap 15.6 0.8.4-bp156.3.3.4
  • mozjs128 openSUSE Tumbleweed 128.5.1-3.1
  • mozjs115 openSUSE Tumbleweed 115.15.0-4.1
  • qt6-webengine Package Hub 15 SP5, openSUSE Leap 15.5 6.4.2-bp155.2.6.1
  • libjxl openSUSE Tumbleweed 0.11.1-1.1

opensuse advisories openSUSE-SU-2025:0139-1openSUSE-SU-2024:14600-1openSUSE-SU-2024:14594-1openSUSE-SU-2024:0402-1openSUSE-SU-2024:14531-1

  • libjxl Alpine 3.21 0.10.4-r0
  • libjxl Alpine 3.24, Alpine 3.23 0.11.1-r0

alpine advisories ALPINE-CVE-2024-11403

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-11403 updated cvss 5.3

libjxl: Out of Bounds Memory Read/Write in libjxl

  • Red Hat Enterprise Linux 7 firefox
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 firefox, thunderbird Red Hat Enterprise Linux 9 firefox, firefox-x11, thunderbird
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
23 mo ago

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • libjxl libjxl

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.