CVE-2026-90175 (GCVE-0-2026-90175)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:07 – Updated: 2026-09-17 16:07
VLAI
Title
smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer
Summary
In 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 ____sys_sendmsg+0x2e8/0x310 ___sys_sendmsg+0x78/0xc0 __sys_sendmsg+0x63/0xc0 do_syscall_64+0xa1/0x670 entry_SYSCALL_64_after_hwframe+0x76/0x7e
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8a3cd890fd2a7d016a821a1c9dfd8a84d45ad320 , < 4d6fe49fa3e7fbd779c761518e6572e340233c9b (git)
Affected: a77e0e02af1c2db5fc040511aa78a58a52e116ab , < c9f2872e91b9fe99c1d0ba768906f7aeb48c8517 (git)
Affected: a77e0e02af1c2db5fc040511aa78a58a52e116ab , < 7a98c3b903b10c4d6176948254012b5ca24b071b (git)
Affected: a77e0e02af1c2db5fc040511aa78a58a52e116ab , < abb5146b2d8197d695ea9eaa0847c73e34f00985 (git)
Affected: a77e0e02af1c2db5fc040511aa78a58a52e116ab , < 1c3ebf832d010c08afe1359215d4121cb1ed2de5 (git)
Affected: 6.6.141 , < 6.6.157 (semver)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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        {
          "lang": "en",
          "value": "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"
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        "shortName": "Linux"
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      "title": "smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer",
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    "datePublished": "2026-09-17T16:07:01.769Z",
    "dateReserved": "2026-09-11T19:38:34.791Z",
    "dateUpdated": "2026-09-17T16:07:01.769Z",
    "state": "PUBLISHED"
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      "date": "2026-09-25",
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      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
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      "title": "smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer",
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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"
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        "id": "CVE-2026-90175",
        "lastModified": "2026-09-17T17:17:11.227",
        "metrics": {},
        "published": "2026-09-17T17:17:11.227",
        "references": [
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      "cve": "CVE-2026-90175",
      "id": "CVE-2026-90175",
      "initial_release_date": "2026-09-21T16:31:36Z",
      "product_status:known_affected": "29",
      "product_status:known_not_affected": "318",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90175",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90175.json",
      "version": "2"
    }
  }
}



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