CVE-2021-47616

HIGH

Linux Kernel 5.15-5.15.9 - Use-After-Free in RDMA Queue Cleanup

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA: Fix use-after-free in rxe_queue_cleanup On error handling path in rxe_qp_from_init() qp->sq.queue is freed and then rxe_create_qp() will drop last reference to this object. qp clean up function will try to free this queue one time and it causes UAF bug. Fix it by zeroing queue pointer after freeing queue in rxe_qp_from_init().

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/acb53e47db1fbc7cd37ab10b46388f045a76e383

Patch

https://git.kernel.org/stable/c/84b01721e8042cdd1e8ffeb648844a09cd4213e0

Scores

CVSS v3 7.8

EPSS 0.0022

EPSS Percentile 12.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-416

Status published

Products (7)

Linux/Linux < 5.15

Linux/Linux 5.15

Linux/Linux 5.15.10 - 5.15.*

Linux/Linux 5.16

Linux/Linux 514aee660df493cd673154a6ba6bab745ec47b8c - 84b01721e8042cdd1e8ffeb648844a09cd4213e0

Linux/Linux 514aee660df493cd673154a6ba6bab745ec47b8c - acb53e47db1fbc7cd37ab10b46388f045a76e383

linux/linux_kernel 5.15 - 5.15.10

Published Jun 19, 2024

Tracked Since Feb 18, 2026