{"id":"CVE-2026-45964","title":"SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path","summary":"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->kref) call to bal…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < 3b2b6c42070ce4204936288253baf101e995c2d3","Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7","Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6","Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < 655c9ba9915f05266998dbbf4b76b3c79b8a70aa","Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < e464e26b2457005c87e158570498274b9f3b90c7","Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < c20f925214249bb4fc04f7e197bea142a6438af6","Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < a2d4e9a76de0b2178001214ba5de5bf94a7354aa","Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < dd2fdc3504592d85e549c523b054898a036a6afe","Linux 5.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:03:16.740748Z"},"published":"2026-05-27","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:13:28.736Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45964","references":[{"url":"https://git.kernel.org/stable/c/3b2b6c42070ce4204936288253baf101e995c2d3"},{"url":"https://git.kernel.org/stable/c/b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7"},{"url":"https://git.kernel.org/stable/c/a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6"},{"url":"https://git.kernel.org/stable/c/655c9ba9915f05266998dbbf4b76b3c79b8a70aa"},{"url":"https://git.kernel.org/stable/c/e464e26b2457005c87e158570498274b9f3b90c7"},{"url":"https://git.kernel.org/stable/c/c20f925214249bb4fc04f7e197bea142a6438af6"},{"url":"https://git.kernel.org/stable/c/a2d4e9a76de0b2178001214ba5de5bf94a7354aa"},{"url":"https://git.kernel.org/stable/c/dd2fdc3504592d85e549c523b054898a036a6afe"}],"tags":["cve.org"],"epss":0.0016,"epssPercentile":0.05197,"ingestedAt":"2026-11-06T16:57:43.360Z","slug":"CVE-2026-45964","body":"## Overview\n\nIn 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->kref) 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.\n\n## Affected\n\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < 3b2b6c42070ce4204936288253baf101e995c2d3`\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < b559be2ec6cdb2e9c2c36c23fbbd4690d8a5c3f7`\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < a1bc9561b617ec7e2d09e6c134d1db8fcf9ca4a6`\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < 655c9ba9915f05266998dbbf4b76b3c79b8a70aa`\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < e464e26b2457005c87e158570498274b9f3b90c7`\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < c20f925214249bb4fc04f7e197bea142a6438af6`\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < a2d4e9a76de0b2178001214ba5de5bf94a7354aa`\n- `Linux >= 5940d1cf9f42f67e9cc3f7df9eda39f5888d6e9e < dd2fdc3504592d85e549c523b054898a036a6afe`\n- `Linux 5.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}