Bug 2564835

Summary: CVE-2026-57197 asterisk: asterisk: Denial of Service via heap buffer overflow in format_ogg_speex [epel-9]
Product: [Fedora] Fedora EPEL Reporter: gkamathe
Component: asteriskAssignee: Peter Lemenkov <lemenkov>
Status: ON_QA --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: epel9CC: bennie.joubert, epel-packagers-sig, jsmith.fedora, lemenkov
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["f4486541-ed84-4763-8512-abd2978f4bfb"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2562260    

Description gkamathe 2026-11-02 09:54:55 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.

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded `memcpy` of `OGG/Speex` packet data in `format_ogg_speex` can cause a heap buffer overflow and crash Asterisk when reading a file containing corrupted Speex audio. The attacker must create the file and make it available to Asterisk either through sufficiently elevated privileges or by convincing an Asterisk administrator to make it available. Asterisk must also be configured to play that file. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Comment 1 Fedora Update System 2026-11-02 14:52:48 UTC 
FEDORA-EPEL-2026-002595a22b (asterisk-18.26.4-2.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-002595a22b
Comment 2 Fedora Update System 2026-11-03 03:13:05 UTC 
FEDORA-EPEL-2026-002595a22b 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-2026-002595a22b

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