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Fencer Vulns
high 7.0

CVE-2026-23868 json

Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling.

published 2026-03-10 8 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-10794 , JLSEC-2026-821

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions needed to trigger this vulnerability are difficult but may be possible.

Patch / fix

  • julia Giflib_jll 6.1.3+0
  • Red Hat Red Hat Enterprise Linux 10 0:5.2.1-22.el10_1.1, 0:5.2.1-24.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:5.2.1-22.el10_0.1
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:4.1.6-9.el7_9.1
  • Red Hat Red Hat Enterprise Linux 8 0:5.1.4-4.el8_10
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:5.1.4-3.el8_2.1
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:5.1.4-3.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:5.1.4-3.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:5.1.4-3.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:5.1.4-3.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:5.1.4-3.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:5.1.4-3.el8_8.1
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:5.1.4-3.el8_8.1
  • Red Hat Red Hat Enterprise Linux 9 0:5.2.1-9.el9_7.1, 0:5.2.1-10.el9_8.1
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:5.2.1-9.el9_0.1
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:5.2.1-9.el9_2.1
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:5.2.1-9.el9_4.1
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:5.2.1-9.el9_6.1
  • Red Hat Red Hat AI Inference Server 3.2 1779223651, 1779223654, 1780681984
  • Red Hat Red Hat AI Inference Server 3.3 1778244531, 1778244546, 1778244559, 1778274666
  • giflib Debian 12 5.2.1-2.5+deb12u1
  • giflib Debian 13 5.2.2-1+deb13u1
  • giflib Debian 14 6.1.3-1

debian advisories DEBIAN-CVE-2026-23868

  • giflib Ubuntu 22.04 LTS 5.1.9-2ubuntu0.3
  • giflib Ubuntu 24.04 LTS 5.2.2-1ubuntu1.2
  • giflib Ubuntu 26.04 LTS 5.2.2-1ubuntu3.2

ubuntu advisories UBUNTU-CVE-2026-23868

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

  • giflib RHEL 9 5.2.1-10.el9_8.1
  • giflib RHEL 10.2 5.2.1-24.el10_2
  • giflib RHEL 8 5.1.4-4.el8_10
  • giflib RHEL 10.1 5.2.1-22.el10_1.1
  • giflib RHEL 9 5.2.1-9.el9_7.1
  • giflib RHEL 9.6 EUS 5.2.1-9.el9_6.1
  • giflib RHEL 9.4 EUS 5.2.1-9.el9_4.1
  • giflib RHEL 9.0 E4S 5.2.1-9.el9_0.1

red hat advisories RHSA-2026:19367RHSA-2026:19154RHSA-2026:9294RHSA-2026:9295RHSA-2026:9291RHSA-2026:9292

  • giflib SLE Module for Basesystem 15 SP7, openSUSE Leap 15.6 5.2.2-150000.4.19.1
  • giflib SLES LTSS Extended Security 12 SP5 5.0.6-13.12.1

suse advisories SUSE-SU-2026:1338-1SUSE-SU-2026:1005-1

  • giflib openSUSE Leap 16.0 5.2.2-160000.3.1
  • giflib openSUSE Tumbleweed 5.2.2-3.1

opensuse advisories openSUSE-SU-2026:20601-1openSUSE-SU-2026:10326-1

  • giflib AlmaLinux 10 5.2.1-24.el10_2
  • giflib AlmaLinux 9 5.2.1-10.el9_8.1
  • giflib AlmaLinux 10 5.2.1-22.el10_1.1
  • giflib AlmaLinux 9 5.2.1-9.el9_7.1
  • giflib AlmaLinux 8 5.1.4-4.el8_10

almalinux advisories ALSA-2026:19154ALSA-2026:19367ALSA-2026:8858ALSA-2026:8859ALSA-2026:8861

  • giflib Rocky Linux 10 5.2.1-24.el10_2
  • giflib Rocky Linux 9 5.2.1-10.el9_8.1
  • giflib Rocky Linux 8 5.1.4-4.el8_10
  • giflib Rocky Linux 10 5.2.1-22.el10_1.1
  • giflib Rocky Linux 9 5.2.1-9.el9_7.1

rocky linux advisories RLSA-2026:19154RLSA-2026:19367RLSA-2026:8861RLSA-2026:8858RLSA-2026:8859

  • giflib Azure Linux 3.0 5.2.1-11

azure linux advisories AZL-79662

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2026-23868 updated cvss 7.0

giflib: Giflib: Double-free vulnerability leading to memory corruption

  • Red Hat Enterprise Linux 6 giflib, giflib-utils
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat AI Inference Server 3.2 rhaiis 1779223651, rhaiis 1779223654, rhaiis/model-opt-cuda-rhel9 1780681984
    fixed: vendor fix RHSA-2026:25096
  • Red Hat AI Inference Server 3.3 rhaiis 1778244531, rhaiis 1778244546, rhaiis 1778244559, rhaiis 1778274666
    fixed: vendor fix RHSA-2026:16008
  • Red Hat CodeReady Linux Builder EUS (v.9.4) giflib-devel 5.2.1-9.el9_4.1, giflib-debuginfo 5.2.1-9.el9_4.1, giflib-debugsource 5.2.1-9.el9_4.1, giflib-utils-debuginfo 5.2.1-9.el9_4.1
    fixed: vendor fix RHSA-2026:9295
  • Red Hat CodeReady Linux Builder EUS (v.9.6) giflib-devel 5.2.1-9.el9_6.1, giflib-debuginfo 5.2.1-9.el9_6.1, giflib-debugsource 5.2.1-9.el9_6.1, giflib-utils-debuginfo 5.2.1-9.el9_6.1
    fixed: vendor fix RHSA-2026:9294
  • Red Hat Enterprise Linux AppStream (v. 8) giflib 5.1.4-4.el8_10
    fixed: vendor fix RHSA-2026:8861
  • Red Hat Enterprise Linux AppStream (v. 9) giflib 5.2.1-9.el9_7.1, giflib 5.2.1-10.el9_8.1
    fixed: vendor fix RHSA-2026:8859
  • Red Hat Enterprise Linux AppStream (v. 10) giflib 5.2.1-24.el10_2, giflib 5.2.1-22.el10_1.1
    fixed: vendor fix RHSA-2026:8858
show 17 more
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) giflib 5.1.4-3.el8_2.1
    fixed: vendor fix RHSA-2026:8884
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) giflib 5.1.4-3.el8_4.1
    fixed: vendor fix RHSA-2026:8885
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) giflib 5.1.4-3.el8_6.1 Red Hat Enterprise Linux AppStream E4S (v.8.6) giflib 5.1.4-3.el8_6.1
    fixed: vendor fix RHSA-2026:8887
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) giflib 5.1.4-3.el8_8.1
    fixed: vendor fix RHSA-2026:8886
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) giflib 5.2.1-9.el9_0.1
    fixed: vendor fix RHSA-2026:9291
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) giflib 5.2.1-9.el9_2.1
    fixed: vendor fix RHSA-2026:9292
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) giflib 5.2.1-22.el10_0.1
    fixed: vendor fix RHSA-2026:9290
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) giflib 5.2.1-9.el9_4.1
    fixed: vendor fix RHSA-2026:9295
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) giflib 5.2.1-9.el9_6.1
    fixed: vendor fix RHSA-2026:9294
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) giflib 5.1.4-3.el8_4.1
    fixed: vendor fix RHSA-2026:8885
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) giflib 5.1.4-3.el8_6.1
    fixed: vendor fix RHSA-2026:8887
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) giflib 5.1.4-3.el8_8.1
    fixed: vendor fix RHSA-2026:8886
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) giflib-devel 5.2.1-9.el9_7.1, giflib-devel 5.2.1-10.el9_8.1, giflib-debuginfo 5.2.1-9.el9_7.1, giflib-debuginfo 5.2.1-10.el9_8.1, giflib-debugsource 5.2.1-9.el9_7.1, giflib-debugsource 5.2.1-10.el9_8.1, +2 more
    fixed: vendor fix RHSA-2026:8859
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) giflib-devel 5.2.1-24.el10_2, giflib-devel 5.2.1-22.el10_1.1, giflib-debuginfo 5.2.1-24.el10_2, giflib-debuginfo 5.2.1-22.el10_1.1, giflib-debugsource 5.2.1-24.el10_2, giflib-debugsource 5.2.1-22.el10_1.1, +2 more
    fixed: vendor fix RHSA-2026:8858
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) giflib-devel 5.2.1-22.el10_0.1, giflib-debuginfo 5.2.1-22.el10_0.1, giflib-debugsource 5.2.1-22.el10_0.1, giflib-utils-debuginfo 5.2.1-22.el10_0.1
    fixed: vendor fix RHSA-2026:9290
  • Red Hat Enterprise Linux CRB (v. 8) giflib-devel 5.1.4-4.el8_10, giflib-debuginfo 5.1.4-4.el8_10, giflib-debugsource 5.1.4-4.el8_10, giflib-utils-debuginfo 5.1.4-4.el8_10
    fixed: vendor fix RHSA-2026:8861
  • Red Hat Enterprise Linux Server (v. 7 ELS) giflib 4.1.6-9.el7_9.1 Red Hat Enterprise Linux Server Optional (v. 7 ELS) giflib-utils 4.1.6-9.el7_9.1
    fixed: vendor fix RHSA-2026:8883

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
7 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV 3.1 5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia Giflib_jll
<6.1.3+0
6.1.3+0

Affected products

  • giflib giflib
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat AI Inference Server 3.2
  • Red Hat Red Hat AI Inference Server 3.3
  • Red Hat Red Hat Enterprise Linux 6

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.