CVE-2023-54201
Linux Kernel 5.7-6.1.52, 6.2-6.4.15, 6.5.0-6.5.2 - Use-After-Free in RDMA/efa QP/CQ Destruction
Title source: llmDescription
In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Fix wrong resources deallocation order When trying to destroy QP or CQ, we first decrease the refcount and potentially free memory regions allocated for the object and then request the device to destroy the object. If the device fails, the object isn't fully destroyed so the user/IB core can try to destroy the object again which will lead to underflow when trying to decrease an already zeroed refcount. Deallocate resources in reverse order of allocating them to safely free them.
References (4)
Core 4
Core References
Scores
EPSS
0.0017
EPSS Percentile
7.2%
Details
Status
published
Products (13)
linux/Kernel
5.7.0 - 6.1.53linux
linux/Kernel
6.2.0 - 6.4.16linux
linux/Kernel
6.5.0 - 6.5.3linux
Linux/Linux
< 5.7
Linux/Linux
5.7
Linux/Linux
6.1.53 - 6.1.*
Linux/Linux
6.4.16 - 6.4.*
Linux/Linux
6.5.3 - 6.5.*
Linux/Linux
6.6
Linux/Linux
ff6629f88c529b07d9704c656c64dae76910e3e9 - 24f9884971f9b34915b67baacf7350a3f6f19ea4
... and 3 more
Published
Dec 30, 2025
Tracked Since
Feb 18, 2026