Bug 2562440 (CVE-2026-57192) - CVE-2026-57192 asterisk: asterisk: Denial of Service via heap buffer overflow in Codec 2 decoder
Summary: CVE-2026-57192 asterisk: asterisk: Denial of Service via heap buffer overflow...
Keywords:
Status: NEW
Alias: CVE-2026-57192
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2564879 2564881 2564882 2564884
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-27 21:42 UTC by OSIDB Bzimport
Modified: 2026-11-02 10:00 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-27 21:42:33 UTC 
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 authenticated attacker may cause a heap buffer overflow through an out-of-bounds write in the `Codec2` decoder caused by a `floor/ceil sample-count mismatch`. The `codec_codec2` module must be loaded and `Codec2` must be configured on the attacked endpoint. The attacker must pass SIP authentication by username/password or `source IP address matching`, establish a call using `Codec2`, and send carefully crafted `Codec2` audio packets. 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.
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