CVE-2022-49127

ref_tracker: implement use-after-free detection

HIGH
7
CVSS Score
Published: February 26, 2025 at 01:55 AM UTC
Updated: August 5, 2026 at 09:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.17 ≤ v < 5.17.35.17 ≤ v < 5.184e66934eaadc83b27ada8d42b60894018f3bfabf5.17
Vendor states this is fixed in 3743c9de303fa36c2e2ca2522ab280c52bcafbd2 (fixed)
Vendor states this is fixed in e3ececfe668facd87d920b608349a32607060e66 (fixed)
Vendor states this is fixed in 5.17 (unaffected)
Vendor states this is fixed in 5.17.3 (unaffected)
Vendor states this is fixed in 5.18 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/3743c9de303fa36c2e2ca2522ab280c52bcafbd2
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e3ececfe668facd87d920b608349a32607060e66

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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