Red Hat Security Advisory: cjose security update
A heap buffer overflow vulnerability exists in the cjose library's AES Key Wrap decryption functionality, which can lead to denial of service. This issue is tracked as CVE-2026-53938 and affects Red Hat Enterprise Linux 9.6 Extended Update Support and related variants. Red Hat has released an important security update addressing this flaw.
AI Analysis
Technical Summary
CVE-2026-53938 is a heap buffer overflow vulnerability in the cjose C library, specifically in the AES Key Wrap decryption process. Exploitation of this flaw can cause a denial of service. Red Hat has acknowledged this issue and provided updated cjose packages for multiple architectures and variants of Red Hat Enterprise Linux 9.6 Extended Update Support. The advisory rates the security impact as Important (high severity).
Potential Impact
Successful exploitation of this vulnerability results in a denial of service due to a heap buffer overflow during AES Key Wrap decryption in the cjose library. There is no indication of code execution or data disclosure from the provided information.
Mitigation Recommendations
Red Hat has released updated cjose packages as part of Red Hat Enterprise Linux 9.6 Extended Update Support to fix this vulnerability. Users should apply the security update as detailed in the Red Hat advisory (RHSA-2026:73128) and the referenced article (https://access.redhat.com/articles/11258) to remediate the issue.
Red Hat Security Advisory: cjose security update
Description
A heap buffer overflow vulnerability exists in the cjose library's AES Key Wrap decryption functionality, which can lead to denial of service. This issue is tracked as CVE-2026-53938 and affects Red Hat Enterprise Linux 9.6 Extended Update Support and related variants. Red Hat has released an important security update addressing this flaw.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-53938 is a heap buffer overflow vulnerability in the cjose C library, specifically in the AES Key Wrap decryption process. Exploitation of this flaw can cause a denial of service. Red Hat has acknowledged this issue and provided updated cjose packages for multiple architectures and variants of Red Hat Enterprise Linux 9.6 Extended Update Support. The advisory rates the security impact as Important (high severity).
Potential Impact
Successful exploitation of this vulnerability results in a denial of service due to a heap buffer overflow during AES Key Wrap decryption in the cjose library. There is no indication of code execution or data disclosure from the provided information.
Mitigation Recommendations
Red Hat has released updated cjose packages as part of Red Hat Enterprise Linux 9.6 Extended Update Support to fix this vulnerability. Users should apply the security update as detailed in the Red Hat advisory (RHSA-2026:73128) and the referenced article (https://access.redhat.com/articles/11258) to remediate the issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:73128
- Cve Count
- 1
- State
- PUBLISHED
Threat ID: 6abc27d5680226ef6846f98c
Added to database: 09/29/2026, 21:04:21 UTC
Last enriched: 09/29/2026, 21:26:58 UTC
Last updated: 09/30/2026, 03:30:22 UTC
Views: 11
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