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Fencer Vulns
medium 5.5

CVE-2021-46822 json

The PPM reader in libjpeg-turbo through 2.0.90 mishandles use of tjLoadImage for loading a 16-bit...

published 2022-06-18 4 y ago modified 2026-07-23 3 mo ago also EUVD-2021-33478 , JLSEC-2025-180

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

The PPM reader in libjpeg-turbo through 2.0.90 mishandles use of tjLoadImage for loading a 16-bit binary PPM file into a grayscale buffer and loading a 16-bit binary PGM file into an RGB buffer. This is related to a heap-based buffer overflow in the get_word_rgb_row function in rdppm.c.

Patch / fix

  • julia JpegTurbo_jll 2.1.0+0
  • libjpeg-turbo Debian 14, Debian 13, Debian 12 1:2.1.1-1

debian advisories DEBIAN-CVE-2021-46822

  • libjpeg-turbo Ubuntu 20.04 LTS 2.0.3-0ubuntu1.20.04.3

ubuntu advisories UBUNTU-CVE-2021-46822

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

  • libjpeg-turbo RHEL 9 2.0.90-6.el9_1
  • turbojpeg RHEL 9 2.0.90-6.el9_1
  • libjpeg-turbo-utils RHEL 9 2.0.90-6.el9_1

red hat advisories RHSA-2023:1068

  • libjpeg-turbo AlmaLinux 9 2.0.90-6.el9_1
  • turbojpeg AlmaLinux 9 2.0.90-6.el9_1
  • libjpeg-turbo-utils AlmaLinux 9 2.0.90-6.el9_1

almalinux advisories ALSA-2023:1068

  • libjpeg-turbo Rocky Linux 9 2.0.90-6.el9_1

rocky linux advisories RLSA-2023:1068

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-2021-46822 updated cvss 5.5

libjpeg-turbo: heap buffer overflow in get_word_rgb_row() in rdppm.c

  • Red Hat CodeReady Linux Builder (v. 9) turbojpeg 2.0.90-6.el9_1 Red Hat Enterprise Linux AppStream (v. 9) libjpeg-turbo 2.0.90-6.el9_1, libjpeg-turbo-utils 2.0.90-6.el9_1
    fixed: vendor fix RHSA-2023:1068
  • Red Hat Enterprise Linux 6 libjpeg-turbo Red Hat Enterprise Linux 7 turbojpeg, libjpeg-turbo, libjpeg-turbo-utils Red Hat Enterprise Linux 8 turbojpeg, libjpeg-turbo, libjpeg-turbo-utils
    not affected: vulnerable code not present

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

Exploit prediction

1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia JpegTurbo_jll
<2.1.0+0
2.1.0+0

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.