Bug 2562439 (CVE-2026-57186) - CVE-2026-57186 asterisk: asterisk: Denial of Service via malformed Q.931 elements in chan_ooh323
Summary: CVE-2026-57186 asterisk: asterisk: Denial of Service via malformed Q.931 elem...
Keywords:
Status: NEW
Alias: CVE-2026-57186
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2564873 2564874 2564876 2564877
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-27 21:31 UTC by OSIDB Bzimport
Modified: 2026-11-02 09:59 UTC (History)
0 users

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Description OSIDB Bzimport 2026-10-27 21:31:54 UTC 
Asterisk is an open source private branch exchange and telephony toolkit. From 21.0.0-pre1 until Asterisk 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3, the `chan_ooh323` `Q.931 party-number parser` lacks the `CVE-2022-37325` fix because that fix was never forward-ported from Asterisk 20 to later versions. Malformed Q.931 elements in an `OOH323 request` can therefore crash Asterisk. This issue affects Asterisk versions greater than 20. The `chan_ooh323` addon channel driver must be explicitly compiled and installed, which is not the default, and its port must be publicly reachable. This issue is fixed in Asterisk 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 22.8-cert3.
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