{"id":"CVE-2026-23098","summary":"netrom: fix double-free in nr_route_frame()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetrom: fix double-free in nr_route_frame()\n\nIn nr_route_frame(), old_skb is immediately freed without checking if\nnr_neigh-\u003eax25 pointer is NULL. Therefore, if nr_neigh-\u003eax25 is NULL,\nthe caller function will free old_skb again, causing a double-free bug.\n\nTherefore, to prevent this, we need to modify it to check whether\nnr_neigh-\u003eax25 is NULL before freeing old_skb.","modified":"2026-04-02T13:12:00.689879Z","published":"2026-02-04T16:08:20.692Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23098.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708"},{"type":"WEB","url":"https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23098.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23098"},{"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":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"},{"fixed":"25aab6bfc31017a7e52035b99aef5c2b6bde8ffb"},{"fixed":"6e0110ea90313b7c0558a0b77038274a6821caf8"},{"fixed":"7c48fdf2d1349bb54815b56fb012b9d577707708"},{"fixed":"bd8955337e3764f912f49b360e176d8aaecf7016"},{"fixed":"94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c"},{"fixed":"9f5fa78d9980fe75a69835521627ab7943cb3d67"},{"fixed":"ba1096c315283ee3292765f6aea4cca15816c4f7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23098.json"}}],"schema_version":"1.7.5"}