CVE-2026-90175
Estado: RecibidaSin puntuar—
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.
Detalles técnicos trazas, registros y código del informe original
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+0x76/0x7eCVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/1c3ebf832d010c08afe1359215d4121cb1ed2de5
- https://git.kernel.org/stable/c/4d6fe49fa3e7fbd779c761518e6572e340233c9b
- https://git.kernel.org/stable/c/7a98c3b903b10c4d6176948254012b5ca24b071b
- https://git.kernel.org/stable/c/abb5146b2d8197d695ea9eaa0847c73e34f00985
- https://git.kernel.org/stable/c/c9f2872e91b9fe99c1d0ba768906f7aeb48c8517
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-90175",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"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-rc1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/auth.c",
"fs/smb/server/mgmt/user_config.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-17T17:17:11.227",
"references": [
{
"url": "https://git.kernel.org/stable/c/1c3ebf832d010c08afe1359215d4121cb1ed2de5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4d6fe49fa3e7fbd779c761518e6572e340233c9b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7a98c3b903b10c4d6176948254012b5ca24b071b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/abb5146b2d8197d695ea9eaa0847c73e34f00985",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c9f2872e91b9fe99c1d0ba768906f7aeb48c8517",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"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"
}
],
"lastModified": "2026-09-17T17:17:11.227",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}