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.
References
Configurations
Configuration 1 (hide)
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History
21 May 2026, 17:02
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-416 | |
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/1b034f2429ce6b45ce74dc266175d277acafc5c4 - Patch | |
| References | () https://git.kernel.org/stable/c/90cc8b2add29b57288025b51c70bc647e7cccb12 - Patch | |
| References | () https://git.kernel.org/stable/c/efc54fb13d79117a825fef17364315a58682c7ec - Patch |
11 May 2026, 08:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
08 May 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-08 15:16
Updated : 2026-05-21 17:02
NVD link : CVE-2026-43447
Mitre link : CVE-2026-43447
CVE.ORG link : CVE-2026-43447
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free