Answer in brief
CVE-2026-80991 records a High severity (CVSS 7.8) vulnerability in net: ravb: serialize PTP clock teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <695acb5534a9e366efb47b40c7487fc56488b09b || >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <67a82e6f886beed0de8f8da08bb767e68fba952d || >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <66b50c31419e7946e9aa325a468ad9b64c961a25 || >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <1cb9663789c5b7a12fcd419fcca6d6254c398252 | 695acb5534a9e366efb47b40c7487fc56488b09b, 67a82e6f886beed0de8f8da08bb767e68fba952d, 66b50c31419e7946e9aa325a468ad9b64c961a25, 1cb9663789c5b7a12fcd419fcca6d6254c398252 |
| Linux/Linuxgeneric | 4.2 | Not reported |
| Linux/Linuxgeneric | >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <b917f37bfcce919a969d66a044580a95b11df31c || >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <695acb5534a9e366efb47b40c7487fc56488b09b || >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <67a82e6f886beed0de8f8da08bb767e68fba952d || >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <66b50c31419e7946e9aa325a468ad9b64c961a25 || >=a0d2f20650e81407d8e51ad2cbdc492861c74e9c <1cb9663789c5b7a12fcd419fcca6d6254c398252 | b917f37bfcce919a969d66a044580a95b11df31c, 695acb5534a9e366efb47b40c7487fc56488b09b, 67a82e6f886beed0de8f8da08bb767e68fba952d, 66b50c31419e7946e9aa325a468ad9b64c961a25, 1cb9663789c5b7a12fcd419fcca6d6254c398252 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.