# CVE-2026-40386: libexif: In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be use... CVE-2026-40386 is fixed in 6 products on 1 platform, first by libexif12 0.6.24-1ubuntu0.22.04.1, released April 12, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-40386 - Priority: High - CVSS: 7.1 (high) - EPSS: 0.0014 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 12, 2026 ## Description In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libexif Debian 12.15 (bookworm) | 0.6.24-1+deb12u1 | [DEBIAN-CVE-2026-40386](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40386.md) | Apr 12, 2026 | | Linux | libexif Debian 13.5 (trixie) | 0.6.25-1+deb13u1 | [DEBIAN-CVE-2026-40386](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40386.md) | Apr 12, 2026 | | Linux | libexif Debian 14 | 0.6.26-1 | [DEBIAN-CVE-2026-40386](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40386.md) | Apr 12, 2026 | | Linux | libexif Fedora 43 | 0.6.26-1.fc43 | [FEDORA-2026-78ADB25141](https://patchblox.com/security/data/fix/linux/fedora-2026-78adb25141.md) | Apr 14, 2026 | | Linux | libexif RHEL 10 | 0.6.24-9.el10_0.1 | [RHSA-2026:26274](https://patchblox.com/security/data/fix/linux/rhsa-2026-26274.md) | Apr 12, 2026 | | Linux | libexif RHEL 8 | 0:0.6.22-6.el8_10 | [RHSA-2026:20929](https://patchblox.com/security/data/fix/linux/rhsa-2026-20929.md) | May 27, 2026 | | Linux | libexif RHEL 9 | 0:0.6.22-6.el9_8.1 | [RHSA-2026:22553](https://patchblox.com/security/data/fix/linux/rhsa-2026-22553.md) | Jun 24, 2026 | | Linux | libexif almalinux 10 | 0.6.24-9.el10_2.1 | [ALSA-2026:22529](https://patchblox.com/security/data/fix/linux/alsa-2026-22529.md) | Jun 2, 2026 | | Linux | libexif almalinux 8 | 0.6.22-6.el8_10 | [ALSA-2026:20929](https://patchblox.com/security/data/fix/linux/alsa-2026-20929.md) | May 26, 2026 | | Linux | libexif almalinux 9 | 0.6.22-6.el9_8.1 | [ALSA-2026:22553](https://patchblox.com/security/data/fix/linux/alsa-2026-22553.md) | Jun 2, 2026 | | Linux | libexif ol 10 | 0:0.6.24-9.el10_2.1 | [ELSA-2026-22529](https://patchblox.com/security/data/fix/linux/elsa-2026-22529.md) | Jul 16, 2026 | | Linux | libexif ol 8 | 0:0.6.22-6.el8_10 | [ELSA-2026-20929](https://patchblox.com/security/data/fix/linux/elsa-2026-20929.md) | May 27, 2026 | | Linux | libexif ol 9 | 0:0.6.22-6.el9_8.1 | [ELSA-2026-22553](https://patchblox.com/security/data/fix/linux/elsa-2026-22553.md) | Jun 23, 2026 | | Linux | libexif opensuse-leap 16.0 | 0.6.26-160000.1.1 | [OPENSUSE-SU-2026:21023-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21023-1.md) | Jun 22, 2026 | | Linux | libexif rocky 10 | 0:0.6.24-9.el10_2.1 | [RLSA-2026:22529](https://patchblox.com/security/data/fix/linux/rlsa-2026-22529.md) | Jun 5, 2026 | | Linux | libexif rocky 8 | 0:0.6.22-6.el8_10 | [RLSA-2026:20929](https://patchblox.com/security/data/fix/linux/rlsa-2026-20929.md) | May 29, 2026 | | Linux | libexif rocky 9 | 0:0.6.22-6.el9_8.1 | [RLSA-2026:22553](https://patchblox.com/security/data/fix/linux/rlsa-2026-22553.md) | Jun 5, 2026 | | Linux | libexif sles 15.7 | 0.6.22-150000.5.12.1 | [SUSE-SU-2026:2837-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2837-1.md) | Jul 10, 2026 | | Linux | libexif sles 16.0 | 0.6.26-160000.1.1 | [SUSE-SU-2026:22324-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22324-1.md) | Jun 22, 2026 | | Linux | libexif-debuginfo Fedora 43 | 0.6.26-1.fc43 | [FEDORA-2026-78ADB25141](https://patchblox.com/security/data/fix/linux/fedora-2026-78adb25141.md) | Apr 14, 2026 | | Linux | libexif-debugsource Fedora 43 | 0.6.26-1.fc43 | [FEDORA-2026-78ADB25141](https://patchblox.com/security/data/fix/linux/fedora-2026-78adb25141.md) | Apr 14, 2026 | | Linux | libexif-devel Fedora 43 | 0.6.26-1.fc43 | [FEDORA-2026-78ADB25141](https://patchblox.com/security/data/fix/linux/fedora-2026-78adb25141.md) | Apr 14, 2026 | | Linux | libexif-devel RHEL 8 | 0:0.6.22-6.el8_10 | [RHSA-2026:20929](https://patchblox.com/security/data/fix/linux/rhsa-2026-20929.md) | May 27, 2026 | | Linux | libexif-devel RHEL 9 | 0:0.6.22-6.el9_8.1 | [RHSA-2026:22553](https://patchblox.com/security/data/fix/linux/rhsa-2026-22553.md) | Jun 24, 2026 | | Linux | libexif-devel almalinux 10 | 0.6.24-9.el10_2.1 | [ALSA-2026:22529](https://patchblox.com/security/data/fix/linux/alsa-2026-22529.md) | Jun 2, 2026 | | Linux | libexif-devel almalinux 8 | 0.6.22-6.el8_10 | [ALSA-2026:20929](https://patchblox.com/security/data/fix/linux/alsa-2026-20929.md) | May 26, 2026 | | Linux | libexif-devel almalinux 9 | 0.6.22-6.el9_8.1 | [ALSA-2026:22553](https://patchblox.com/security/data/fix/linux/alsa-2026-22553.md) | Jun 2, 2026 | | Linux | libexif-devel ol 10 | 0:0.6.24-9.el10_2.1 | [ELSA-2026-22529](https://patchblox.com/security/data/fix/linux/elsa-2026-22529.md) | Jul 16, 2026 | | Linux | libexif-devel ol 8 | 0:0.6.22-6.el8_10 | [ELSA-2026-20929](https://patchblox.com/security/data/fix/linux/elsa-2026-20929.md) | May 27, 2026 | | Linux | libexif-devel ol 9 | 0:0.6.22-6.el9_8.1 | [ELSA-2026-22553](https://patchblox.com/security/data/fix/linux/elsa-2026-22553.md) | Jun 23, 2026 | | Linux | libexif-doc Fedora 43 | 0.6.26-1.fc43 | [FEDORA-2026-78ADB25141](https://patchblox.com/security/data/fix/linux/fedora-2026-78adb25141.md) | Apr 14, 2026 | | Linux | libexif-doc almalinux 10 | 0.6.24-9.el10_2.1 | [ALSA-2026:22529](https://patchblox.com/security/data/fix/linux/alsa-2026-22529.md) | Jun 2, 2026 | | Linux | libexif-doc ol 10 | 0:0.6.24-9.el10_2.1 | [ELSA-2026-22529](https://patchblox.com/security/data/fix/linux/elsa-2026-22529.md) | Jul 16, 2026 | | Linux | libexif12 Ubuntu 22.04.1 LTS (jammy) | 0.6.24-1ubuntu0.22.04.1 | [libexif12 0.6.24-1ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libexif12-0.6.24-1ubuntu0.22.04.1.md) | Apr 12, 2026 | | Linux | libexif12 Ubuntu 24.04.5 LTS (noble) | 0.6.24-1ubuntu0.24.04.1 | [libexif12 0.6.24-1ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libexif12-0.6.24-1ubuntu0.24.04.1.md) | Apr 12, 2026 | | Linux | libexif12 Ubuntu 26.04.1 LTS (resolute) | 0.6.25-2ubuntu0.1 | [libexif12 0.6.25-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libexif12-0.6.25-2ubuntu0.1.md) | Apr 12, 2026 | --- Data as of 2026-11-08T13:06:02Z UTC. 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