{"id":"CVE-2026-64054","summary":"net: shaper: reject duplicate leaves in GROUP request","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: shaper: reject duplicate leaves in GROUP request\n\nnet_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES\nentries. When userspace supplies the same leaf handle twice, the same\nold-parent pointer lands twice in old_nodes[]. The cleanup loop double\nfrees the parent. Of course the same parent may still be in old_nodes[]\ntwice if we are moving multiple of its leaves.\n\nNote that this patch also implicitly fixes the fact that the\ni \u003e= leaves_count path forgets to set ret.","modified":"2026-07-21T03:47:52.202936394Z","published":"2026-07-19T15:39:36.475Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64054.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/31767bf852b59f05125b58a17007e4cd1ea9eb2e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a9a2fa1da619f276580b0d4c5d12efac89e8642b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64054.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64054"},{"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":"5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e"},{"fixed":"5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75"},{"fixed":"31767bf852b59f05125b58a17007e4cd1ea9eb2e"},{"fixed":"a9a2fa1da619f276580b0d4c5d12efac89e8642b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64054.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.34"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64054.json"}}],"schema_version":"1.7.5"}