CVE-2026-35369Medium· 5.5▾ Sunlitkill: 'kill -1' parsed as PID -1, sending SIGTERM to all processes (system crash / DoS)
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
0.1%
0.1% → 0.1%
kill -1 is incorrectly parsed as a positional pid = -1; combined with the default SIGTERM this calls kill(-1, SIGTERM), signaling nearly every process the caller can see. GNU kill recognizes -1/-9 as signals and reports "not enough arguments".
$ kill -1 # uutils: kill(-1, SIGTERM) -> mass termination / crash
$ kill -1 # GNU: kill: not enough arguments
Impact: a user running kill -1 mass-terminates processes, potentially crashing the system. Recommendation: parse -N as a signal number, and error with "not enough arguments" when no PID is given.
Remediation: Acknowledged by Canonical; fixed in commit cae94028.
Reported by Zellic in the uutils coreutils Program Security Assessment (prepared for Canonical, Jan 20 2026), audited commit 3a07ffc5a9bd4c283e75afa548ba1f1957bad242. Finding 3.70. Credit: Zellic.
uu_kill < 0.6.0Upgrade to a patched release:
uu_kill 0.6.0Connected by shared product, vendor, weakness, or advisory.
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