CVE-2026-80991
CVE CVE-2026-80991EUVD EUVD-2026-76314Published 2026-09-11T19:42:48.000ZLast changed 2026-09-13T06:28:55.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net: ravb: serialize PTP clock teardown ravb_ptp_interrupt() can race with ravb_ptp_stop() and pass the clock to ptp_clock_event() while ptp_clock_unregister() is freeing it. This can lead to a use-after-free. Use READ_ONCE() and WRITE_ONCE() for lockless access to the clock pointer. Atomically detach it with xchg() before disabling PTP interrupts, then synchronize all IRQs which can invoke ravb_ptp_interrupt() before unregistering the detached clock. A handler which read the old pointer completes before the clock is unregistered, while later handlers read NULL and skip the event.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.2.4; a0d2f20650e81407d8e51ad2cbdc492861c74e9c <1cb9663789c5b7a12fcd419fcca6d6254c398252; a0d2f20650e81407d8e51ad2cbdc492861c74e9c <67a82e6f886beed0de8f8da08bb767e68fba952d; a0d2f20650e81407d8e51ad2cbdc492861c74e9c <695acb5534a9e366efb47b40c7487fc56488b09b; a0d2f20650e81407d8e51ad2cbdc492861c74e9c <66b50c31419e7946e9aa325a468ad9b64c961a25; patch: 6.18.50; patch: 6.12.109; patch: 7.3-rc1; 4.2; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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