Answer in brief
CVE-2026-43447 records a High severity (CVSS 7.8) vulnerability in iavf: fix PTP use-after-free during reset. The current sources do not mark it as known exploited. The current feed maps 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 <1b034f2429ce6b45ce74dc266175d277acafc5c4 || >=7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 <90cc8b2add29b57288025b51c70bc647e7cccb12 || >=7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 <efc54fb13d79117a825fef17364315a58682c7ec | 1b034f2429ce6b45ce74dc266175d277acafc5c4, 90cc8b2add29b57288025b51c70bc647e7cccb12, efc54fb13d79117a825fef17364315a58682c7ec |
| Linux/Linuxgeneric | 6.15 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: iavf: fix PTP use-after-free during reset Commit 7c01dbfc8a1c5f ("iavf: periodically cache PHC time") introduced a worker to cache PHC time, but failed to stop it during reset or disable. This creates a race condition where `iavf_reset_task()` or `iavf_disable_vf()` free adapter resources (AQ) while the worker is still running. If the worker triggers `iavf_queue_ptp_cmd()` during teardown, it accesses freed memory/locks, leading to a crash. Fix this by calling `iavf_ptp_release()` before tearing down the adapter. This ensures `ptp_clock_unregister()` synchronously cancels the worker and cleans up the chardev before the backing resources are destroyed.
Quoted source text, attributed separately from HOL analysis.