CVE-2026-98751Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's terminal (tty) subsystem. A race condition can occur when a terminal hangup interrupts an active break signaling operation, causing the kernel to communicate with a device driver after the device has …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
Last analysed / modified upstream
— → 5.5
none → medium
A flaw was found in the Linux kernel's terminal (tty) subsystem. A race condition can occur when a terminal hangup interrupts an active break signaling operation, causing the kernel to communicate with a device driver after the device has already disconnected or powered down. A local attacker could exploit this vulnerability by issuing break commands during a terminal hangup to trigger a system crash, resulting in a Denial of Service (DoS).
kernel: tty: abort break signalling on hangup — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.
Affected:
No fix planned:
Not affected:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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