CVE-2022-50135
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup The function rxe_create_qp calls rxe_qp_from_init. If some error occurs, the error handler of function rxe_qp_from_init will set both scq and rcq to NULL. Then rxe_create_qp calls rxe_put to handle qp. In the end, rxe_qp_do_cleanup is called by rxe_put. rxe_qp_do_cleanup directly accesses scq and rcq before checking them. This will cause null-ptr-deref error. The call graph is as below: rxe_create_qp { ... rxe_qp_from_init { ... err1: ... qp->rcq = NULL; <---rcq is set to NULL qp->scq = NULL; <---scq is set to NULL ... } qp_init: rxe_put{ ... rxe_qp_do_cleanup { ... atomic_dec(&qp->scq->num_wq); <--- scq is accessed ... atomic_dec(&qp->rcq->num_wq); <--- rcq is accessed } }
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-06-18 11:15:43.387000
Last modified
2026-11-05 20:17:25.040000
View original CVE JSON
{
"id": "CVE-2022-50135",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-06-18T11:15:43.387",
"lastModified": "2026-11-05T20:17:25.040",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup\n\nThe function rxe_create_qp calls rxe_qp_from_init. If some error\noccurs, the error handler of function rxe_qp_from_init will set\nboth scq and rcq to NULL.\n\nThen rxe_create_qp calls rxe_put to handle qp. In the end,\nrxe_qp_do_cleanup is called by rxe_put. rxe_qp_do_cleanup directly\naccesses scq and rcq before checking them. This will cause\nnull-ptr-deref error.\n\nThe call graph is as below:\n\nrxe_create_qp {\n ...\n rxe_qp_from_init {\n ...\n err1:\n ...\n qp->rcq = NULL; <---rcq is set to NULL\n qp->scq = NULL; <---scq is set to NULL\n ...\n }\n\nqp_init:\n rxe_put{\n ...\n rxe_qp_do_cleanup {\n ...\n atomic_dec(&qp->scq->num_wq); <--- scq is accessed\n ...\n atomic_dec(&qp->rcq->num_wq); <--- rcq is accessed\n }\n}"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/rxe: Corrección BUG: KASAN: null-ptr-deref en rxe_qp_do_cleanup La función rxe_create_qp llama a rxe_qp_from_init. Si ocurre algún error, el controlador de errores de la función rxe_qp_from_init establecerá tanto scq como rcq en NULL. Luego, rxe_create_qp llama a rxe_put para manejar qp. Al final, rxe_put llama a rxe_qp_do_cleanup. rxe_qp_do_cleanup accede directamente a scq y rcq antes de verificarlos. Esto causará un error null-ptr-deref. El gráfico de llamadas es el siguiente: rxe_create_qp { ... rxe_qp_from_init { ... err1: ... qp->rcq = NULL; <---rcq se establece en NULL qp->scq = NULL; <---scq se establece en NULL ... } qp_init: rxe_put{ ... rxe_qp_do_cleanup { ... atomic_dec(&qp->scq->num_wq); <--- se accede a scq ... atomic_dec(&qp->rcq->num_wq); <--- se accede a rcq } }"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_qp.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4703b4f0d94a5f887297713a2f6c2916a1ef08fd",
"lessThan": "8598b9d0a364c1663c96fc0fab9df0d36c809aea",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "37da51efe6eaa0560f46803c8c436a48a2084da7",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_qp.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.19",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.19",
"versionType": "semver",
"status": "unaffected"
},
{
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"lessThanOrEqual": "5.19.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.0",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T19:55:05.892280Z",
"id": "CVE-2022-50135",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.19",
"versionEndExcluding": "5.19.2",
"matchCriteriaId": "A1A2A5A5-4598-4D7E-BA07-4660398D6C8F"
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"references": [
{
"url": "https://git.kernel.org/stable/c/37da51efe6eaa0560f46803c8c436a48a2084da7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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},
{
"url": "https://git.kernel.org/stable/c/8598b9d0a364c1663c96fc0fab9df0d36c809aea",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}