{"id":"CVE-2025-39853","title":"i40e: Fix potential invalid access when MAC list is empty","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix potential invalid access when MAC list is empty\n\nlist_first_entry() never returns NULL - if the list is empty, it still\nreturns a pointer to an invalid object…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 971feafe157afac443027acdc235badc6838560b","Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 3c6fb929afa313d9d11f780451d113f73922fe5d","Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 1eadabcf5623f1237a539b16586b4ed8ac8dffcd","Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < e2a5e74879f9b494bbd66fa93f355feacde450c7","Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < fb216d980fae6561c7c70af8ef826faf059c6515","Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf","Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 9c21fc4cebd44dd21016c61261a683af390343f8","Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < a556f06338e1d5a85af0e32ecb46e365547f92b9","Linux 4.6"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:12:39.658604Z"},"published":"2025-09-19","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:13:00.313Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-39853","references":[{"url":"https://git.kernel.org/stable/c/971feafe157afac443027acdc235badc6838560b"},{"url":"https://git.kernel.org/stable/c/3c6fb929afa313d9d11f780451d113f73922fe5d"},{"url":"https://git.kernel.org/stable/c/1eadabcf5623f1237a539b16586b4ed8ac8dffcd"},{"url":"https://git.kernel.org/stable/c/e2a5e74879f9b494bbd66fa93f355feacde450c7"},{"url":"https://git.kernel.org/stable/c/fb216d980fae6561c7c70af8ef826faf059c6515"},{"url":"https://git.kernel.org/stable/c/66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf"},{"url":"https://git.kernel.org/stable/c/9c21fc4cebd44dd21016c61261a683af390343f8"},{"url":"https://git.kernel.org/stable/c/a556f06338e1d5a85af0e32ecb46e365547f92b9"}],"tags":["cve.org"],"epss":0.00167,"epssPercentile":0.06014,"ingestedAt":"2026-11-05T22:38:32.034Z","slug":"CVE-2025-39853","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix potential invalid access when MAC list is empty\n\nlist_first_entry() never returns NULL - if the list is empty, it still\nreturns a pointer to an invalid object, leading to potential invalid\nmemory access when dereferenced.\n\nFix this by using list_first_entry_or_null instead of list_first_entry.\n\n## Affected\n\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 971feafe157afac443027acdc235badc6838560b`\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 3c6fb929afa313d9d11f780451d113f73922fe5d`\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 1eadabcf5623f1237a539b16586b4ed8ac8dffcd`\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < e2a5e74879f9b494bbd66fa93f355feacde450c7`\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < fb216d980fae6561c7c70af8ef826faf059c6515`\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf`\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < 9c21fc4cebd44dd21016c61261a683af390343f8`\n- `Linux >= e3219ce6a775468368fb270fae3eb82a6787b436 < a556f06338e1d5a85af0e32ecb46e365547f92b9`\n- `Linux 4.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}