CVE-2026-80929High· 7.0▾ TwilightA flaw was found in the Linux kernel. A non-root user can exploit a vulnerability in the `sysctl` mechanism, specifically related to the `cad_pid` entry. By unsharing process ID (PID) and user namespaces, a local attacker can modify this g…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 7
none → high
— → 7
none → high
— → 7.8
none → high
Last analysed / modified upstream
7.8 → 7
7.8 → 7
A flaw was found in the Linux kernel. A non-root user can exploit a vulnerability in the sysctl mechanism, specifically related to the cad_pid entry. By unsharing process ID (PID) and user namespaces, a local attacker can modify this global system control from a child namespace. This allows a user without administrative privileges to alter a critical system setting that should only be modifiable by the root user, leading to privilege escalation.
kernel: sysctl: move the "cad_pid" entry from pid_table[] to kern_reboot_table[] — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Affected:
No fix planned:
Not affected:
Out of support scope
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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