CVE-2021-47356

May 21, 2024, 4:54 p.m.

None
No Score

Description

In the Linux kernel, the following vulnerability has been resolved: mISDN: fix possible use-after-free in HFC_cleanup() This module's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.

Product(s) Impacted

Product Versions
Linux kernel
Linux Kernel

Weaknesses

Common security weaknesses mapped to this vulnerability.

References

https://git.kernel.org/stable/c/009fc857c5f6fda81f2f7dd851b2d54193a8e733
https://git.kernel.org/stable/c/3ecd228c636ee17c14662729737fa07242a93cb0
https://git.kernel.org/stable/c/49331c07ef0f8fdfa42b30ba6a83a657b29d7fbe
https://git.kernel.org/stable/c/54ff3202928952a100c477248e65ac6db01258a7
https://git.kernel.org/stable/c/5f2818185da0fe82a932f0856633038b66faf124
https://git.kernel.org/stable/c/61370ff07e0acc657559a8fac02551dfeb9d3020
https://git.kernel.org/stable/c/7867ddc5f3de7f289aee63233afc0df4b62834c5
https://git.kernel.org/stable/c/b7ee9ae1e0cf55a037c4a99af2acc5d78cb7802d
https://git.kernel.org/stable/c/ed7c3739d0a07e2ec3ccbffe7e93cea01c438cda

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
2024-05-21
CVE-2021-47356

Timeline

Published: May 21, 2024, 3:15 p.m.
Last Modified: May 21, 2024, 4:54 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.