Red Hat Security Advisory: giflib security update
A denial of service vulnerability exists in giflib, a library for reading and writing GIF images, due to a buffer overflow in the EGifGCBToExtension function (CVE-2026-26740). Red Hat has issued a security advisory for this vulnerability affecting Red Hat Enterprise Linux 9.2 and related variants. An update is available to address this issue.
AI Analysis
Technical Summary
The giflib library contains a buffer overflow vulnerability in the EGifGCBToExtension function that can lead to denial of service (CVE-2026-26740). This vulnerability is tracked under CWE-787 (Out-of-bounds Write). Red Hat has released an update for Red Hat Enterprise Linux 9.2 and its variants to fix this issue. The advisory classifies the security impact as important and provides updated packages to remediate the vulnerability. No CVSS score is provided in the advisory.
Potential Impact
Successful exploitation of this vulnerability can cause a denial of service condition via a buffer overflow in giflib. This could disrupt applications or services that rely on giflib for processing GIF images. There is no indication of known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated giflib packages for Red Hat Enterprise Linux 9.2 and related variants to fix this vulnerability. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:33509) and the referenced update instructions (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: giflib security update
Description
A denial of service vulnerability exists in giflib, a library for reading and writing GIF images, due to a buffer overflow in the EGifGCBToExtension function (CVE-2026-26740). Red Hat has issued a security advisory for this vulnerability affecting Red Hat Enterprise Linux 9.2 and related variants. An update is available to address this issue.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The giflib library contains a buffer overflow vulnerability in the EGifGCBToExtension function that can lead to denial of service (CVE-2026-26740). This vulnerability is tracked under CWE-787 (Out-of-bounds Write). Red Hat has released an update for Red Hat Enterprise Linux 9.2 and its variants to fix this issue. The advisory classifies the security impact as important and provides updated packages to remediate the vulnerability. No CVSS score is provided in the advisory.
Potential Impact
Successful exploitation of this vulnerability can cause a denial of service condition via a buffer overflow in giflib. This could disrupt applications or services that rely on giflib for processing GIF images. There is no indication of known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated giflib packages for Red Hat Enterprise Linux 9.2 and related variants to fix this vulnerability. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:33509) and the referenced update instructions (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:33509
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a4452ea27e9c797198e1b27
Added to database: 06/30/2026, 23:36:10 UTC
Last enriched: 06/30/2026, 23:53:11 UTC
Last updated: 07/01/2026, 00:11:24 UTC
Views: 2
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