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
CVE-2026-90175
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90175
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8a3cd890fd2a7d016a821a1c9dfd8a84d45ad320",
"lessThan": "4d6fe49fa3e7fbd779c761518e6572e340233c9b",
"versionType": "git"
},
{
"status": "affected",
"version": "a77e0e02af1c2db5fc040511aa78a58a52e116ab",
"lessThan": "c9f2872e91b9fe99c1d0ba768906f7aeb48c8517",
"versionType": "git"
},
{
"status": "affected",
"version": "a77e0e02af1c2db5fc040511aa78a58a52e116ab",
"lessThan": "7a98c3b903b10c4d6176948254012b5ca24b071b",
"versionType": "git"
},
{
"status": "affected",
"version": "a77e0e02af1c2db5fc040511aa78a58a52e116ab",
"lessThan": "abb5146b2d8197d695ea9eaa0847c73e34f00985",
"versionType": "git"
},
{
"status": "affected",
"version": "a77e0e02af1c2db5fc040511aa78a58a52e116ab",
"lessThan": "1c3ebf832d010c08afe1359215d4121cb1ed2de5",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.141",
"lessThan": "6.6.157",
"versionType": "semver"
}
],
"programFiles": [
"fs/smb/server/auth.c",
"fs/smb/server/mgmt/user_config.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/auth.c",
"fs/smb/server/mgmt/user_config.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90175
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36558 · Revision 1
- Added to Heist Feed
- Publisher date