{"id":"CVE-2025-40175","summary":"idpf: cleanup remaining SKBs in PTP flows","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: cleanup remaining SKBs in PTP flows\n\nWhen the driver requests Tx timestamp value, one of the first steps is\nto clone SKB using skb_get. It increases the reference counter for that\nSKB to prevent unexpected freeing by another component.\nHowever, there may be a case where the index is requested, SKB is\nassigned and never consumed by PTP flows - for example due to reset during\nrunning PTP apps.\n\nAdd a check in release timestamping function to verify if the SKB\nassigned to Tx timestamp latch was freed, and release remaining SKBs.","modified":"2026-03-20T12:43:12.457280Z","published":"2025-11-12T10:53:50.166Z","related":["SUSE-SU-2026:20012-1","SUSE-SU-2026:20015-1","SUSE-SU-2026:20021-1","openSUSE-SU-2025:20172-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40175.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a3f8c0a273120fd2638f03403e786c3de2382e72"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40175.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40175"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4901e83a94ef0a8baf27916f31daf59b0a68547f"},{"fixed":"2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5"},{"fixed":"a3f8c0a273120fd2638f03403e786c3de2382e72"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40175.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.17.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40175.json"}}],"schema_version":"1.7.5"}