Red Hat Security Advisory: libexif security update
The libexif packages provide a library for extracting extra information from image files. Security Fix(es): * libexif: libexif: Denial of Service and information disclosure via integer underflow in MakerNote decoding (CVE-2026-40386) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The libexif library contains an integer underflow vulnerability in its MakerNote decoding code, tracked as CVE-2026-40386. This flaw can be exploited to cause denial of service or leak information. The vulnerability affects various Red Hat Enterprise Linux 10 distributions and CodeReady Linux Builder variants. Red Hat has issued an official security advisory (RHSA-2026:22529) and released updated libexif packages to remediate the issue. The advisory rates the impact as moderate and provides detailed package updates for multiple architectures. No CVSS score is provided in the advisory, but the vendor classifies the risk as moderate.
Potential Impact
Successful exploitation of the integer underflow in libexif's MakerNote decoding can result in denial of service conditions and potential information disclosure. This could affect applications or services that process image files using the vulnerable libexif versions on Red Hat Enterprise Linux 10 and related platforms. There are no reports of active exploitation in the wild. The impact is considered moderate by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated libexif packages that fix the integer underflow vulnerability. Users of affected Red Hat Enterprise Linux 10 and related products should apply the security update as described in Red Hat advisory RHSA-2026:22529 and the referenced article https://access.redhat.com/articles/11258. Applying this official patch fully mitigates the vulnerability. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: libexif security update
Description
The libexif packages provide a library for extracting extra information from image files. Security Fix(es): * libexif: libexif: Denial of Service and information disclosure via integer underflow in MakerNote decoding (CVE-2026-40386) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libexif library contains an integer underflow vulnerability in its MakerNote decoding code, tracked as CVE-2026-40386. This flaw can be exploited to cause denial of service or leak information. The vulnerability affects various Red Hat Enterprise Linux 10 distributions and CodeReady Linux Builder variants. Red Hat has issued an official security advisory (RHSA-2026:22529) and released updated libexif packages to remediate the issue. The advisory rates the impact as moderate and provides detailed package updates for multiple architectures. No CVSS score is provided in the advisory, but the vendor classifies the risk as moderate.
Potential Impact
Successful exploitation of the integer underflow in libexif's MakerNote decoding can result in denial of service conditions and potential information disclosure. This could affect applications or services that process image files using the vulnerable libexif versions on Red Hat Enterprise Linux 10 and related platforms. There are no reports of active exploitation in the wild. The impact is considered moderate by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released updated libexif packages that fix the integer underflow vulnerability. Users of affected Red Hat Enterprise Linux 10 and related products should apply the security update as described in Red Hat advisory RHSA-2026:22529 and the referenced article https://access.redhat.com/articles/11258. Applying this official patch fully mitigates the vulnerability. 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-2026:22529
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a20982de29bf47b50ebdb61
Added to database: 6/3/2026, 9:10:05 PM
Last enriched: 6/3/2026, 9:12:33 PM
Last updated: 6/4/2026, 5:00:29 AM
Views: 7
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