What is the severity of CVE-2021-47324?

CVE-2021-47324 is classified as a high severity vulnerability due to its potential for exploitation in the Linux kernel.

How do I fix CVE-2021-47324?

To remediate CVE-2021-47324, users should update their Linux kernel to the latest patched version provided by their distribution.

What is the impact of CVE-2021-47324?

CVE-2021-47324 may allow an attacker to exploit a use-after-free condition, potentially leading to arbitrary code execution or system crashes.

Which versions of the Linux kernel are affected by CVE-2021-47324?

CVE-2021-47324 affects specific versions of the Linux kernel that incorporate the watchdog timer functionality, particularly prior to the fix.

Is CVE-2021-47324 publicly known?

Yes, CVE-2021-47324 is a publicly documented vulnerability that has been reported and acknowledged in the Linux community.

Vulnerability/
CVE-2021-47324

high

8.8

CWE

416

21/5/2024

19/12/2024

CVE-2021-47324: watchdog: Fix possible use-after-free in wdt_startup()

First published: Tue May 21 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: watchdog: Fix possible use-after-free in wdt_startup() 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.

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

Affected Software	Affected Version	How to fix
Red Hat Kernel-devel

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-47324?
CVE-2021-47324 is classified as a high severity vulnerability due to its potential for exploitation in the Linux kernel.
How do I fix CVE-2021-47324?
To remediate CVE-2021-47324, users should update their Linux kernel to the latest patched version provided by their distribution.
What is the impact of CVE-2021-47324?
CVE-2021-47324 may allow an attacker to exploit a use-after-free condition, potentially leading to arbitrary code execution or system crashes.
Which versions of the Linux kernel are affected by CVE-2021-47324?
CVE-2021-47324 affects specific versions of the Linux kernel that incorporate the watchdog timer functionality, particularly prior to the fix.
Is CVE-2021-47324 publicly known?
Yes, CVE-2021-47324 is a publicly documented vulnerability that has been reported and acknowledged in the Linux community.

agent/references
agent/title
agent/type
agent/description
agent/first-publish-date
agent/author
collector/nvd-api
source/NVD
agent/severity
agent/event
agent/weakness
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/source
agent/softwarecombine
agent/tags
agent/guess-ai
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/linux
canonical/red hat kernel-devel

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.

Frequently Asked Questions

What is the severity of CVE-2021-47324?
CVE-2021-47324 is classified as a high severity vulnerability due to its potential for exploitation in the Linux kernel.
How do I fix CVE-2021-47324?
To remediate CVE-2021-47324, users should update their Linux kernel to the latest patched version provided by their distribution.
What is the impact of CVE-2021-47324?
CVE-2021-47324 may allow an attacker to exploit a use-after-free condition, potentially leading to arbitrary code execution or system crashes.
Which versions of the Linux kernel are affected by CVE-2021-47324?
CVE-2021-47324 affects specific versions of the Linux kernel that incorporate the watchdog timer functionality, particularly prior to the fix.
Is CVE-2021-47324 publicly known?
Yes, CVE-2021-47324 is a publicly documented vulnerability that has been reported and acknowledged in the Linux community.