CVE-2026-43447

{"id": "CVE-2026-43447", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0", "lessThan": "1b034f2429ce6b45ce74dc266175d277acafc5c4", "versionType": "git"}, {"status": "affected", "version": "7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0", "lessThan": "90cc8b2add29b57288025b51c70bc647e7cccb12", "versionType": "git"}, {"status": "affected", "version": "7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0", "lessThan": "efc54fb13d79117a825fef17364315a58682c7ec", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/intel/iavf/iavf_main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"status": "unaffected", "version": "0", "lessThan": "6.15", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.19", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.9", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/intel/iavf/iavf_main.c"], "defaultStatus": "affected"}]}], "published": "2026-05-08T15:16:57.217", "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"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\niavf: corrige uso despu\u00e9s de liberaci\u00f3n de PTP durante el reinicio\n\nEl commit 7c01dbfc8a1c5f (\u2019iavf: cachear peri\u00f3dicamente la hora PHC\u2019) introdujo un worker para cachear la hora PHC, pero no lo detuvo durante el reinicio o la deshabilitaci\u00f3n.\n\nEsto crea una condici\u00f3n de carrera donde \u2019iavf_reset_task()\u2019 o \u2019iavf_disable_vf()\u2019 liberan recursos del adaptador (AQ) mientras el worker sigue en ejecuci\u00f3n. Si el worker activa \u2019iavf_queue_ptp_cmd()\u2019 durante el desmontaje, accede a memoria/bloqueos liberados, lo que lleva a un fallo.\n\nSolucione esto llamando a \u2019iavf_ptp_release()\u2019 antes de desmontar el adaptador. Esto asegura que \u2019ptp_clock_unregister()\u2019 cancela sincr\u00f3nicamente el worker y limpia el chardev antes de que se destruyan los recursos de respaldo."}], "lastModified": "2026-11-11T20:10:00.273", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D6461E17-9936-4679-8F97-568871A6FBE4", "versionEndExcluding": "6.18.19", "versionStartIncluding": "6.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E825E7C3-FEAC-4FD3-8A81-78D7387948C9", "versionEndExcluding": "6.19.9", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}