CVE-2022-50135

published 2025-06-18

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…

Priority P4 18 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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; scq = NULL; scq->num_wq); rcq->num_wq); <--- rcq is accessed
}
}

Affected

8 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.2-1 (bookworm)	linux 6.0.2-1 (bookworm)
linux	linux	—	—
linux	linux	>= 4703b4f0d94a5f887297713a2f6c2916a1ef08fd < 8598b9d0a364c1663c96fc0fab9df0d36c809aea	8598b9d0a364c1663c96fc0fab9df0d36c809aea
linux	linux	>= 4703b4f0d94a5f887297713a2f6c2916a1ef08fd < 37da51efe6eaa0560f46803c8c436a48a2084da7	37da51efe6eaa0560f46803c8c436a48a2084da7
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 5.19 < 5.19.2	5.19.2

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

vendor_redhat 5.5 MEDIUM

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