CVE-2021-47143

MEDIUM

Linux Kernel - Use-After-Free in SMC Device List Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: net/smc: remove device from smcd_dev_list after failed device_add() If the device_add() for a smcd_dev fails, there's no cleanup step that rolls back the earlier list_add(). The device subsequently gets freed, and we end up with a corrupted list. Add some error handling that removes the device from the list.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897

Patch

https://git.kernel.org/stable/c/40588782f1016c655ae1d302892f61d35af96842

Patch

https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607

Scores

CVSS v3 5.5

EPSS 0.0022

EPSS Percentile 13.0%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-459

Status published

Products (10)

Linux/Linux < 4.19

Linux/Linux 4.19

Linux/Linux 5.10.42 - 5.10.*

Linux/Linux 5.12.9 - 5.12.*

Linux/Linux 5.13

Linux/Linux c6ba7c9ba43de1b57e9a53946e7ff988554c84ed - 40588782f1016c655ae1d302892f61d35af96842

Linux/Linux c6ba7c9ba43de1b57e9a53946e7ff988554c84ed - 444d7be9532dcfda8e0385226c862fd7e986f607

Linux/Linux c6ba7c9ba43de1b57e9a53946e7ff988554c84ed - 8b2cdc004d21a7255f219706dca64411108f7897

linux/linux_kernel 5.13 rc1 (3 CPE variants)

linux/linux_kernel 4.19 - 5.10.42

Published Mar 25, 2024

Tracked Since Feb 18, 2026