Review reviewHigh

CVE-2022-49127

Linux Linux, linux kernel

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.

CVSS: 7
EPSS: 0.22%
CISA KEV: Not listed
Published: 2025.02.26

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.22%

Technical severityCVSS 7

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 4e66934eaadc83b27ada8d42b60894018f3bfabf < 3743c9de303fa36c2e2ca2522ab280c52bcafbd2, >= 4e66934eaadc83b27ada8d42b60894018f3bfabf < e3ececfe668facd87d920b608349a32607060e66, >= 5.17, >= 5.17 < 5.17.3
Fixed versions: 5.17.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-416