Bug 2540006 (CVE-2026-95622) - CVE-2026-95622 ModemManager: ModemManager: Reachable assertion in Cell Broadcast encoding parse causes denial of service
Summary: CVE-2026-95622 ModemManager: ModemManager: Reachable assertion in Cell Broadc...
Keywords:
Status: NEW
Alias: CVE-2026-95622
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2540008
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 10:33 UTC by OSIDB Bzimport
Modified: 2026-09-24 10:42 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-24 10:33:46 UTC 
A flaw was found in ModemManager. When parsing a Cell Broadcast Message, some 3GPP data-coding-scheme values (8-bit and reserved character sets) are not handled. The process hits a reachable assertion and aborts. An attacker who can deliver a crafted Cell Broadcast PDU over the radio network, or via a modem AT channel, can cause ModemManager to exit. Repeated aborts can exhaust systemd's default start limit and leave the service failed.
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