{"id":"CVE-2026-45964","summary":"SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: fix gss_auth kref leak in gss_alloc_msg error path\n\nCommit 5940d1cf9f42 (\"SUNRPC: Rebalance a kref in auth_gss.c\") added\na kref_get(&gss_auth-\u003ekref) call to balance the gss_put_auth() done\nin gss_release_msg(), but forgot to add a corresponding kref_put()\non the error path when kstrdup_const() fails.\n\nIf service_name is non-NULL and kstrdup_const() fails, the function\njumps to err_put_pipe_version which calls put_pipe_version() and\nkfree(gss_msg), but never releases the gss_auth reference. This leads\nto a kref leak where the gss_auth structure is never freed.\n\nAdd a forward declaration for gss_free_callback() and call kref_put()\nin the err_put_pipe_version error path to properly release the\nreference taken earlier.","modified":"2026-07-03T18:29:20.875076350Z","published":"2026-05-27T12:18:22.052Z","related":["SUSE-SU-2026:22433-1","SUSE-SU-2026:22436-1","SUSE-SU-2026:2722-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45964.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3b2b6c42070ce4204936288253baf101e995c2d3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/655c9ba9915f05266998dbbf4b76b3c79b8a70aa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a2d4e9a76de0b2178001214ba5de5bf94a7354aa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c20f925214249bb4fc04f7e197bea142a6438af6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dd2fdc3504592d85e549c523b054898a036a6afe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e464e26b2457005c87e158570498274b9f3b90c7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45964.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45964"},{"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":"5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e"},{"fixed":"3b2b6c42070ce4204936288253baf101e995c2d3"},{"fixed":"b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7"},{"fixed":"a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6"},{"fixed":"655c9ba9915f05266998dbbf4b76b3c79b8a70aa"},{"fixed":"e464e26b2457005c87e158570498274b9f3b90c7"},{"fixed":"c20f925214249bb4fc04f7e197bea142a6438af6"},{"fixed":"a2d4e9a76de0b2178001214ba5de5bf94a7354aa"},{"fixed":"dd2fdc3504592d85e549c523b054898a036a6afe"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45964.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.2.0"},{"fixed":"5.10.252"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45964.json"}}],"schema_version":"1.7.5"}