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CVE-2026-90175

smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer

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
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 8a3cd890fd2a7d016a821a1c9dfd8a84d45ad320
Version < 4d6fe49fa3e7fbd779c761518e6572e340233c9b
Status affected
Version a77e0e02af1c2db5fc040511aa78a58a52e116ab
Version < c9f2872e91b9fe99c1d0ba768906f7aeb48c8517
Status affected
Version a77e0e02af1c2db5fc040511aa78a58a52e116ab
Version < 7a98c3b903b10c4d6176948254012b5ca24b071b
Status affected
Version a77e0e02af1c2db5fc040511aa78a58a52e116ab
Version < abb5146b2d8197d695ea9eaa0847c73e34f00985
Status affected
Version a77e0e02af1c2db5fc040511aa78a58a52e116ab
Version < 1c3ebf832d010c08afe1359215d4121cb1ed2de5
Status affected
Version 6.6.141
Version < 6.6.157
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.12
Status affected
Version 0
Version < 6.12
Status unaffected
Version <= 6.6.*
Version 6.6.157
Status unaffected
Version <= 6.12.*
Version 6.12.110
Status unaffected
Version <= 6.18.*
Version 6.18.52
Status unaffected
Version <= 7.2.*
Version 7.2.6
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.101
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/4d6fe49fa3e7fbd779c761518e6572e340233c9b
https://git.kernel.org/stable/c/c9f2872e91b9fe99c1d0ba768906f7aeb48c8517
https://git.kernel.org/stable/c/7a98c3b903b10c4d6176948254012b5ca24b071b
https://git.kernel.org/stable/c/abb5146b2d8197d695ea9eaa0847c73e34f00985
https://git.kernel.org/stable/c/1c3ebf832d010c08afe1359215d4121cb1ed2de5