{"id":"CVE-2026-46158","summary":"mptcp: pm: ADD_ADDR rtx: always decrease sk refcount","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: always decrease sk refcount\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer().\nIt should then be released in all cases at the end.\n\nSome (unlikely) checks were returning directly instead of calling\nsock_put() to decrease the refcount. Jump to a new 'exit' label to call\n__sock_put() (which will become sock_put() in the next commit) to fix\nthis potential leak.\n\nWhile at it, drop the '!msk' check which cannot happen because it is\nnever reset, and explicitly mark the remaining one as \"unlikely\".","modified":"2026-09-16T03:30:43.333373889Z","published":"2026-05-28T09:36:13.821Z","related":["SUSE-SU-2026:23066-1","SUSE-SU-2026:23068-1","SUSE-SU-2026:23193-1","SUSE-SU-2026:23194-1","SUSE-SU-2026:23221-1","SUSE-SU-2026:23231-1","SUSE-SU-2026:23237-1","SUSE-SU-2026:23241-1","SUSE-SU-2026:23244-1","SUSE-SU-2026:3790-1","SUSE-SU-2026:3810-1","openSUSE-SU-2026:10954-1","openSUSE-SU-2026:21555-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46158.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/81d8142148164176385c279c7c1e1d581867423d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9426265e157dd77ec237c795901ed4dea6d69b5c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b41dd76f3b9735096c21d3e799a2b9fe36498d57"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e9ba34301d2e90f63f97c76ad9eb98e5250fe961"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f5555a6d7c472849fdf2b426e3d0a85103118793"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46158.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46158"},{"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":"00cfd77b9063dcdf3628a7087faba60de85a9cc8"},{"fixed":"f5555a6d7c472849fdf2b426e3d0a85103118793"},{"fixed":"e9ba34301d2e90f63f97c76ad9eb98e5250fe961"},{"fixed":"81d8142148164176385c279c7c1e1d581867423d"},{"fixed":"9426265e157dd77ec237c795901ed4dea6d69b5c"},{"fixed":"b41dd76f3b9735096c21d3e799a2b9fe36498d57"},{"fixed":"acd3d3562315c99f3c0db16f0fcc5f0306638982"},{"fixed":"25e37407442b8766ec2cf52fb4e31b5c3d3aeeae"},{"fixed":"9634cb35af17019baec21ca648516ce376fa10e6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46158.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.10.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.218"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.185"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.142"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.92"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.30"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46158.json"}}],"schema_version":"1.9.0"}