GHSA-JXH3-3QM5-QH2J
Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31In the Linux kernel, the following vulnerability has been resolved:
smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer
Free it unconditionally after ksmbd_alloc_user() calls.
kmemleak splat: unreferenced object 0xffff888103b83540 (size 192): comm "pool-0", pid 16970, jiffies 4377290937 hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 408ccc66): __kvmalloc_node_noprof+0x730/0x920 handle_generic_event+0xec/0x1a0 [ksmbd] genl_family_rcv_msg_doit+0xe0/0x130 genl_rcv_msg+0x181/0x290 netlink_rcv_skb+0x4f/0x100 genl_rcv+0x28/0x40 netlink_unicast+0x1e6/0x2c0 netlink_sendmsg+0x20a/0x450 _syssendmsg+0x2e8/0x310 _sys_sendmsg+0x78/0xc0 __sys_sendmsg+0x63/0xc0 do_syscall_64+0xa1/0x670 entry_SYSCALL_64_after_hwframe+0x76/0x7e
{
"affected": [],
"aliases": [
"CVE-2026-90175"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:17:11Z",
"severity": null
},
"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",
"id": "GHSA-jxh3-3qm5-qh2j",
"modified": "2026-09-17T18:31:53Z",
"published": "2026-09-17T18:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90175"
},
{
"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"
}
],
"schema_version": "1.4.0",
"severity": []
}
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