CVE-2026-81666 | BDVDB-2026-368261 Detail

Description#

An integer overflow was found in Corosync's handling of membership commit token messages. The length-validation check for these messages can be bypassed on 32-bit systems due to an integer overflow in the calculation of the expected message length, allowing a crafted network packet to trigger an out-of-bounds memory access that crashes the Corosync daemon. This results in a denial of service for the affected cluster node. The overflow does not occur on 64-bit systems, where the length calculation is correctly performed in 64-bit arithmetic.

Impact#

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Exploit#

History#

1. Version 12026-09-04Record published in the CVE List.
2. Version 22026-11-06Most recent update recorded in the CVE List.