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CVE-2026-101887

BlueALSA bluealsad LC3plus Decoder Division-by-Zero DoS

CVSS 4.0 2.1 LOWCVSS 3.1 3.5 LOWCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-101887

Published

BlueALSA (bluez-alsa/bluealsad) contains a division-by-zero vulnerability in the LC3plus sink decoder (a2dp-lc3plus.c, a2dp_lc3plus_dec_thread) that allows a Bluetooth-adjacent attacker to crash the daemon by sending a crafted RTP media header with an attacker-controlled frame count field set to zero. Attackers can establish an A2DP source connection with an LC3plus session negotiated against a victim running bluealsad as an A2DP sink and transmit a non-fragmented LC3plus media header with a zero frame count to trigger a SIGFPE in the decoding thread, causing a denial of service on builds compiled with LC3plus support enabled.

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23 Oct 2026 15:48:27 UTC

BlueALSA bluealsad LC3plus Decoder Division-by-Zero DoS

cve-program · CVE-2026-101887 · Published

This historical link shows only this version and versions saved before it. Browse all advisory history.

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