CVE-2022-50135

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 } }

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/37da51efe6eaa0560f46803c8c436a48a2084da7	Patch
https://git.kernel.org/stable/c/8598b9d0a364c1663c96fc0fab9df0d36c809aea	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

18 Nov 2025, 18:08

Type	Values Removed	Values Added
CWE		CWE-476
First Time		Linux linux Kernel Linux
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:o:linux:linux_kernel::::::::
References	~~() https://git.kernel.org/stable/c/37da51efe6eaa0560f46803c8c436a48a2084da7 -~~	() https://git.kernel.org/stable/c/37da51efe6eaa0560f46803c8c436a48a2084da7 - Patch
References	~~() https://git.kernel.org/stable/c/8598b9d0a364c1663c96fc0fab9df0d36c809aea -~~	() https://git.kernel.org/stable/c/8598b9d0a364c1663c96fc0fab9df0d36c809aea - Patch

Information

Published : 2025-06-18 11:15

Updated : 2025-11-18 18:08

NVD link : CVE-2022-50135

Mitre link : CVE-2022-50135

CVE.ORG link : CVE-2022-50135

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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