CVE-2022-49127: ref_tracker: implement use-after-free detection
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ref_tracker: implement use-after-free detection Whenever ref_tracker_dir_init() is called, mark the struct ref_tracker_dir as dead. Test the dead status from ref_tracker_alloc() and ref_tracker_free() This should detect buggy dev_put()/dev_hold() happening too late in netdevice dismantle process.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.17<5.17.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-49127?
CVE-2022-49127 has been classified with a moderate severity level due to its potential for use-after-free vulnerabilities in the Linux kernel.
How do I fix CVE-2022-49127?
To remediate CVE-2022-49127, upgrade to the latest version of the Linux kernel that includes the necessary patches.
Which versions of the Linux kernel are affected by CVE-2022-49127?
CVE-2022-49127 affects versions of the Linux kernel from 5.17 to 5.17.3.
What is the nature of the vulnerability in CVE-2022-49127?
CVE-2022-49127 involves a use-after-free condition related to the handling of the struct ref_tracker_dir enabling potential exploitation.
When was CVE-2022-49127 disclosed?
CVE-2022-49127 was disclosed as part of updates to the Linux kernel in response to identified vulnerabilities.
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