{"id":"CVE-2021-46998","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nethernet:enic: Fix a use after free bug in enic_hard_start_xmit\n\nIn enic_hard_start_xmit, it calls enic_queue_wq_skb(). Inside\nenic_queue_wq_skb, if some error happens, the skb will be freed\nby dev_kfree_skb(skb). But the freed skb is still used in\nskb_tx_timestamp(skb).\n\nMy patch makes enic_queue_wq_skb() return error and goto spin_unlock()\nincase of error. The solution is provided by Govind.\nSee https://lkml.org/lkml/2021/4/30/961.","modified":"2026-03-15T22:43:04.875222Z","published":"2024-02-28T09:15:38.090Z","related":["SUSE-SU-2024:1454-1","SUSE-SU-2024:1465-1","SUSE-SU-2024:1489-1","SUSE-SU-2024:1643-1","SUSE-SU-2024:1646-1","SUSE-SU-2024:1870-1"],"references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/25a87b1f566b5eb2af2857a928f0e2310d900976"},{"type":"FIX","url":"https://git.kernel.org/stable/c/643001b47adc844ae33510c4bb93c236667008a3"},{"type":"FIX","url":"https://git.kernel.org/stable/c/6892396ebf04ea2c021d80e10f4075e014cd7cc3"},{"type":"FIX","url":"https://git.kernel.org/stable/c/7afdd6aba95c8a526038e7abe283eeac3e4320f1"},{"type":"FIX","url":"https://git.kernel.org/stable/c/d90529392aaf498dafa95d212295d64b2cea4e24"},{"type":"FIX","url":"https://git.kernel.org/stable/c/f7f6f07774091a6ddd98500b85386c3c6afb30d3"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46998.json","unresolved_ranges":[{"events":[{"introduced":"4.16"},{"fixed":"4.19.191"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.120"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.38"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.11.22"}]},{"events":[{"introduced":"5.12"},{"fixed":"5.12.5"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}