Answer in brief
CVE-2026-43447 records a Unknown severity 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.
A CVSS score is not reported in the current record. 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.
Answer in brief
CVE-2026-43447 records a Unknown severity 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.
A CVSS score is not reported in the current record. 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.