CVE-2026-89746High· 7.0▾ TwilightA flaw was found in the Linux kernel's tracing component. A local user can exploit a use-after-free vulnerability by registering multiple histogram triggers with the same name. This action causes the kernel to attempt to access freed memor…
▾ 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%
— → 4.4
none → medium
— → 4.4
none → medium
— → 7.8
none → high
7.8 → 4.4
high → medium
Last analysed / modified upstream
7.8 → 7
A flaw was found in the Linux kernel's tracing component. A local user can exploit a use-after-free vulnerability by registering multiple histogram triggers with the same name. This action causes the kernel to attempt to access freed memory, leading to a system crash and a Denial of Service (DoS).
kernel: tracing: Fix use-after-free with same-name named triggers — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-21.
Affected:
No fix planned:
Not affected:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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