{"id":"CVE-2026-90175","summary":"smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer\n\nFree it unconditionally after ksmbd_alloc_user() calls.\n\nkmemleak splat:\n  unreferenced object 0xffff888103b83540 (size 192):\n    comm \"pool-0\", pid 16970, jiffies 4377290937\n    hex dump (first 32 bytes):\n      00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00  ................\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace (crc 408ccc66):\n      __kvmalloc_node_noprof+0x730/0x920\n      handle_generic_event+0xec/0x1a0 [ksmbd]\n      genl_family_rcv_msg_doit+0xe0/0x130\n      genl_rcv_msg+0x181/0x290\n      netlink_rcv_skb+0x4f/0x100\n      genl_rcv+0x28/0x40\n      netlink_unicast+0x1e6/0x2c0\n      netlink_sendmsg+0x20a/0x450\n      ____sys_sendmsg+0x2e8/0x310\n      ___sys_sendmsg+0x78/0xc0\n      __sys_sendmsg+0x63/0xc0\n      do_syscall_64+0xa1/0x670\n      entry_SYSCALL_64_after_hwframe+0x76/0x7e","modified":"2026-09-18T03:48:36.407651456Z","published":"2026-09-17T16:07:01.769Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90175.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1c3ebf832d010c08afe1359215d4121cb1ed2de5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4d6fe49fa3e7fbd779c761518e6572e340233c9b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7a98c3b903b10c4d6176948254012b5ca24b071b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/abb5146b2d8197d695ea9eaa0847c73e34f00985"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c9f2872e91b9fe99c1d0ba768906f7aeb48c8517"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90175.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90175"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8a3cd890fd2a7d016a821a1c9dfd8a84d45ad320"},{"fixed":"4d6fe49fa3e7fbd779c761518e6572e340233c9b"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a77e0e02af1c2db5fc040511aa78a58a52e116ab"},{"fixed":"c9f2872e91b9fe99c1d0ba768906f7aeb48c8517"},{"fixed":"7a98c3b903b10c4d6176948254012b5ca24b071b"},{"fixed":"abb5146b2d8197d695ea9eaa0847c73e34f00985"},{"fixed":"1c3ebf832d010c08afe1359215d4121cb1ed2de5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.6.141"},{"fixed":"6.6.157"}]}],"versions":["v6.6.156","v6.6.155","v6.6.154","v6.6.153","v6.6.152","v6.6.151","v6.6.150","v6.6.149","v6.6.148","v6.6.147","v6.6.146","v6.6.145","v6.6.144","v6.6.143","v6.6.142","v6.6.141"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90175.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.12.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90175.json"}}],"schema_version":"1.9.0"}