{"id":"CVE-2026-43481","summary":"net-shapers: don't free reply skb after genlmsg_reply()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet-shapers: don't free reply skb after genlmsg_reply()\n\ngenlmsg_reply() hands the reply skb to netlink, and\nnetlink_unicast() consumes it on all return paths, whether the\nskb is queued successfully or freed on an error path.\n\nnet_shaper_nl_get_doit() and net_shaper_nl_cap_get_doit()\ncurrently jump to free_msg after genlmsg_reply() fails and call\nnlmsg_free(msg), which can hit the same skb twice.\n\nReturn the genlmsg_reply() error directly and keep free_msg\nonly for pre-reply failures.","modified":"2026-07-15T01:49:22.537084263Z","published":"2026-05-13T15:08:29.116Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43481.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/57885276cc16a2e2b76282c808a4e84cbecb3aae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83f7b54242d0abbfce35a55c01322f50962ed3ee"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8738dcc844fff7d0157ee775230e95df3b1884d7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43481.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43481"},{"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":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb"},{"fixed":"8738dcc844fff7d0157ee775230e95df3b1884d7"},{"fixed":"83f7b54242d0abbfce35a55c01322f50962ed3ee"},{"fixed":"57885276cc16a2e2b76282c808a4e84cbecb3aae"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43481.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43481.json"}}],"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"}]}