Bug 2507564

Summary: CVE-2026-48829 libgsasl: Denial of Service via NULL pointer dereference in DIGEST-MD5 [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Mauro Matteo Cascella <mcascell>
Component: libgsaslAssignee: Peter Lemenkov <lemenkov>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: epel10CC: lemenkov, mh, wart
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["bee0a35b-db01-43b4-8647-56a4bb6b8e27"]}
Fixed In Version: libgsasl-1.10.0-17.el10_2 libgsasl-1.10.0-17.el9 libgsasl-1.10.0-17.el10_3 libgsasl-1.8.0-10.el8 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-08-16 00:25:15 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2480997    

Description Mauro Matteo Cascella 2026-07-27 16:38:22 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.

In GNU SASL before 2.2.3, DIGEST-MD5 has a NULL pointer dereference affecting both clients and servers, via a known token with no accompanying = character. This occurs in lib/digest-md5/getsubopt.c.

Comment 1 Fedora Update System 2026-08-07 11:50:38 UTC
FEDORA-EPEL-2026-0ad97cabff (libgsasl-1.10.0-17.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-0ad97cabff

Comment 2 Fedora Update System 2026-08-07 11:50:39 UTC
FEDORA-EPEL-2026-f0ca43d440 (libgsasl-1.10.0-17.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f0ca43d440

Comment 3 Fedora Update System 2026-08-07 11:50:40 UTC
FEDORA-EPEL-2026-dfb6bd79e3 (libgsasl-1.8.0-10.el8) has been submitted as an update to Fedora EPEL 8.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-dfb6bd79e3

Comment 4 Fedora Update System 2026-08-08 01:43:47 UTC
FEDORA-EPEL-2026-c7381b15d3 has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-c7381b15d3

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

Comment 5 Fedora Update System 2026-08-08 01:51:39 UTC
FEDORA-EPEL-2026-0ad97cabff 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-2026-0ad97cabff

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

Comment 6 Fedora Update System 2026-08-08 01:52:33 UTC
FEDORA-EPEL-2026-f0ca43d440 has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f0ca43d440

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

Comment 7 Fedora Update System 2026-08-08 01:57:07 UTC
FEDORA-EPEL-2026-dfb6bd79e3 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-dfb6bd79e3

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

Comment 8 Fedora Update System 2026-08-16 00:25:15 UTC
FEDORA-EPEL-2026-f0ca43d440 (libgsasl-1.10.0-17.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-08-16 00:37:21 UTC
FEDORA-EPEL-2026-0ad97cabff (libgsasl-1.10.0-17.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 10 Fedora Update System 2026-08-16 00:48:21 UTC
FEDORA-EPEL-2026-c7381b15d3 (libgsasl-1.10.0-17.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 11 Fedora Update System 2026-08-16 01:01:20 UTC
FEDORA-EPEL-2026-dfb6bd79e3 (libgsasl-1.8.0-10.el8) has been pushed to the Fedora EPEL 8 stable repository.
If problem still persists, please make note of it in this bug report.