Bug 2539415

Summary: CVE-2026-94055 exim: Exim: Use-after-free vulnerability in GnuTLS TLS settings leading to denial of service [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Jon Weiser <jweiser>
Component: eximAssignee: Jaroslav Škarvada <jskarvad>
Status: ON_QA --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: epel10CC: bennie.joubert, dwmw2, jskarvad, martin.fraenzl
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["9f7ab2fb-2298-4aba-af65-e24fd4db0733"]}
Fixed In Version: Doc Type: ---
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Clone Of: Environment:
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2538399    

Description Jon Weiser 2026-09-23 13:53:46 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.

Comment 1 Fedora Update System 2026-10-06 15:46:22 UTC
FEDORA-EPEL-2026-15b5988543 (exim-4.100.1-1.el10_4) has been submitted as an update to Fedora EPEL 10.4.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-15b5988543

Comment 2 Fedora Update System 2026-10-06 15:50:15 UTC
FEDORA-EPEL-2026-61a5ea9fcd (exim-4.100.1-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-61a5ea9fcd

Comment 3 Fedora Update System 2026-10-06 15:56:52 UTC
FEDORA-EPEL-2026-71b80f48fa (exim-4.100.1-1.el8) has been submitted as an update to Fedora EPEL 8.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-71b80f48fa

Comment 4 Fedora Update System 2026-10-07 02:06:44 UTC
FEDORA-EPEL-2026-15b5988543 has been pushed to the Fedora EPEL 10.4 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-15b5988543

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-10-07 02:33:52 UTC
FEDORA-EPEL-2026-61a5ea9fcd has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-61a5ea9fcd

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-10-07 02:34:23 UTC
FEDORA-EPEL-2026-71b80f48fa has been pushed to the Fedora EPEL 8 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-71b80f48fa

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.