Red Hat Security Advisory: libexif security update
A moderate severity vulnerability (CVE-2026-40386) affects the libexif library used for extracting metadata from image files. The flaw involves an integer underflow in the MakerNote decoding functionality, which can lead to denial of service and information disclosure. This issue impacts Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder variants across multiple architectures. Red Hat has issued a security advisory with updated libexif packages to address this vulnerability.
AI Analysis
Technical Summary
The libexif library contains an integer underflow vulnerability in its MakerNote decoding code, identified as CVE-2026-40386. This flaw can be exploited to cause denial of service or leak information. Red Hat Product Security has rated this vulnerability as moderate and released updated libexif packages for Red Hat Enterprise Linux 10 and its variants, including CodeReady Linux Builder and Extended Update Support versions. The advisory references Red Hat's errata RHSA-2026:22529 and provides package updates to fix the issue.
Potential Impact
Successful exploitation of this integer underflow vulnerability in libexif's MakerNote decoding can result in denial of service conditions or unauthorized disclosure of information. The impact is rated moderate by Red Hat Product Security. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libexif packages that address CVE-2026-40386. Users running Red Hat Enterprise Linux 10 and related variants should apply these official updates as described in Red Hat advisory RHSA-2026:22529 and the referenced update article (https://access.redhat.com/articles/11258). No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: libexif security update
Description
A moderate severity vulnerability (CVE-2026-40386) affects the libexif library used for extracting metadata from image files. The flaw involves an integer underflow in the MakerNote decoding functionality, which can lead to denial of service and information disclosure. This issue impacts Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder variants across multiple architectures. Red Hat has issued a security advisory with updated libexif packages to address this vulnerability.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libexif library contains an integer underflow vulnerability in its MakerNote decoding code, identified as CVE-2026-40386. This flaw can be exploited to cause denial of service or leak information. Red Hat Product Security has rated this vulnerability as moderate and released updated libexif packages for Red Hat Enterprise Linux 10 and its variants, including CodeReady Linux Builder and Extended Update Support versions. The advisory references Red Hat's errata RHSA-2026:22529 and provides package updates to fix the issue.
Potential Impact
Successful exploitation of this integer underflow vulnerability in libexif's MakerNote decoding can result in denial of service conditions or unauthorized disclosure of information. The impact is rated moderate by Red Hat Product Security. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libexif packages that address CVE-2026-40386. Users running Red Hat Enterprise Linux 10 and related variants should apply these official updates as described in Red Hat advisory RHSA-2026:22529 and the referenced update article (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-2026:22529
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a20982de29bf47b50ebdb61
Added to database: 06/03/2026, 21:10:05 UTC
Last enriched: 07/13/2026, 10:54:20 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 157
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