CVE-2026-80991Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's `net: ravb` module. A race condition exists during the Precision Time Protocol (PTP) clock teardown. This allows the `ravb_ptp_interrupt()` function to attempt to use a PTP clock after it has been fre…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · 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
Last analysed / modified upstream
7.8 → 4.4
high → medium
7.8 → 4.4
high → medium
4.4 → 5.5
A flaw was found in the Linux kernel's net: ravb module. A race condition exists during the Precision Time Protocol (PTP) clock teardown. This allows the ravb_ptp_interrupt() function to attempt to use a PTP clock after it has been freed by ptp_clock_unregister(), leading to a use-after-free vulnerability. This could result in system instability, denial of service, or potentially information disclosure.
kernel: net: ravb: serialize PTP clock teardown — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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