{"id":"CVE-2026-43447","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-43447","generatedAt":"2026-10-28T02:10:40.220Z","title":"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.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niavf: fix PTP use-after-free during reset\n\nCommit 7c01dbfc8a1c5f (\"iavf: periodically cache PHC time\") introduced a\nworker to cache PHC time, but failed to stop it during reset or disable.\n\nThis creates a race condition where `iavf_reset_task()` or\n`iavf_disable_vf()` free adapter resources (AQ) while the worker is still\nrunning. If the worker triggers `iavf_queue_ptp_cmd()` during teardown, it\naccesses freed memory/locks, leading to a crash.\n\nFix this by calling `iavf_ptp_release()` before tearing down the adapter.\nThis ensures `ptp_clock_unregister()` synchronously cancels the worker and\ncleans up the chardev before the backing resources are destroyed.","published":"2026-05-08T15:16:57.000Z","lastModified":"2026-06-17T10:49:37.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["linux/linux kernel"],"epss":{"score":0.00124,"percentile":0.02122,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/1b034f2429ce6b45ce74dc266175d277acafc5c4","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/90cc8b2add29b57288025b51c70bc647e7cccb12","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/efc54fb13d79117a825fef17364315a58682c7ec","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43447","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}