FKIE_CVE-2022-50135
Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2026-06-17 05:22
Severity
Summary
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
}
}
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_qp.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "8598b9d0a364c1663c96fc0fab9df0d36c809aea",
"status": "affected",
"version": "4703b4f0d94a5f887297713a2f6c2916a1ef08fd",
"versionType": "git"
},
{
"lessThan": "37da51efe6eaa0560f46803c8c436a48a2084da7",
"status": "affected",
"version": "4703b4f0d94a5f887297713a2f6c2916a1ef08fd",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_qp.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.19"
},
{
"lessThan": "5.19",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.19.*",
"status": "unaffected",
"version": "5.19.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A1A2A5A5-4598-4D7E-BA07-4660398D6C8F",
"versionEndExcluding": "5.19.2",
"versionStartIncluding": "5.19",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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-\u003ercq = NULL; \u003c---rcq is set to NULL\n qp-\u003escq = NULL; \u003c---scq is set to NULL\n ...\n }\n\nqp_init:\n rxe_put{\n ...\n rxe_qp_do_cleanup {\n ...\n atomic_dec(\u0026qp-\u003escq-\u003enum_wq); \u003c--- scq is accessed\n ...\n atomic_dec(\u0026qp-\u003ercq-\u003enum_wq); \u003c--- rcq is accessed\n }\n}"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/rxe: Correcci\u00f3n BUG: KASAN: null-ptr-deref en rxe_qp_do_cleanup La funci\u00f3n rxe_create_qp llama a rxe_qp_from_init. Si ocurre alg\u00fan error, el controlador de errores de la funci\u00f3n rxe_qp_from_init establecer\u00e1 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 causar\u00e1 un error null-ptr-deref. El gr\u00e1fico de llamadas es el siguiente: rxe_create_qp { ... rxe_qp_from_init { ... err1: ... qp-\u0026gt;rcq = NULL; \u0026lt;---rcq se establece en NULL qp-\u0026gt;scq = NULL; \u0026lt;---scq se establece en NULL ... } qp_init: rxe_put{ ... rxe_qp_do_cleanup { ... atomic_dec(\u0026amp;qp-\u0026gt;scq-\u0026gt;num_wq); \u0026lt;--- se accede a scq ... atomic_dec(\u0026amp;qp-\u0026gt;rcq-\u0026gt;num_wq); \u0026lt;--- se accede a rcq } }"
}
],
"id": "CVE-2022-50135",
"lastModified": "2026-06-17T05:22:49.847",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-06-18T11:15:43.387",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/37da51efe6eaa0560f46803c8c436a48a2084da7"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/8598b9d0a364c1663c96fc0fab9df0d36c809aea"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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