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CVE Record

CVE-2022-50889: dm integrity: Fix UAF in dm_integrity_dtr()

In the Linux kernel, the following vulnerability has been resolved: dm integrity: Fix UAF in dm_integrity_dtr() Dm_integrity also has the same UAF problem when dm_resume() and dm_destroy() are concurrent. Therefore, cancelling timer again in dm_integrity_dtr().

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50889 is a Linux kernel flaw in the dm-integrity device-mapper component. A race between resume and destroy operations can leave a timer using freed memory. Public sources do not provide a CVSS score, impact rating, or evidence of active exploitation.

Executive priority

Treat as a kernel maintenance item with elevated attention for storage-integrity workloads. Because severity and exploitation evidence are not provided, prioritize validation and vendor patch tracking rather than emergency response.

Technical view

The kernel fix describes a use-after-free in dm_integrity_dtr() when dm_resume() and dm_destroy() run concurrently. The remediation cancels the timer again during the dm-integrity destructor. The CVE record lists Linux as affected and links multiple stable kernel commits containing the fix.

Likely exposure

Exposure is most relevant to Linux systems using the dm-integrity device-mapper target. Systems not using dm-integrity are less likely to be affected, but kernel version and vendor backports must be checked.

Exploitation context

No public source in the bundle reports active exploitation, KEV listing, exploit availability, or attacker prerequisites. The issue is a kernel memory-safety bug, but practical impact is not stated in the provided sources.

Researcher notes

The public record is sparse: no CVSS, CWE, exploit status, or detailed impact is supplied. Analysis should focus on the linked stable commits and downstream distribution advisories to determine fixed kernel builds and affected backport status.

Mitigation direction

  • Update to a Linux kernel or vendor kernel package containing the referenced stable fixes.
  • Prioritize systems that use dm-integrity or related storage integrity configurations.
  • If patch timing is uncertain, check Linux distribution advisories for backported fixes.

Validation and detection

  • Inventory Linux kernel versions across affected servers and appliances.
  • Identify hosts configured to use the dm-integrity device-mapper target.
  • Confirm vendor kernel changelogs include the dm_integrity_dtr() UAF fix.
  • Verify the running kernel after maintenance, not only the installed package.
Prepared
Confidence
medium
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2022-50889 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux7eada909bfd7ac90a4522e56aa3179d1fd68cd14, 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, 7eada909bfd7ac90a4522e56aa3179d1fd68cd14, 7eada909bfd7ac90a4522e56aa3179d1fd68cd14unaffected
LinuxLinux4.12, 0, 5.4.229, 5.10.163, 5.15.87, 6.0.18, 6.1.4, 6.2affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.