LiveActive security incident?Get immediate response
CVE Record

CVE-2023-53626: ext4: fix possible double unlock when moving a directory

In the Linux kernel, the following vulnerability has been resolved: ext4: fix possible double unlock when moving a directory

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel ext4 filesystem bug involving directory moves. The public record says a possible double unlock was fixed, but does not provide CVSS, impact detail, or affected distribution packages. Treat it as a kernel stability and availability concern until vendor guidance clarifies exposure.

Executive priority

Track and patch through normal kernel security maintenance unless vendor guidance assigns higher severity. There is not enough public evidence here to justify emergency response, but kernel filesystem bugs should not be ignored on shared or critical systems.

Technical view

The CVE describes an ext4 bug: possible double unlock when moving a directory. The source bundle identifies Linux kernel stable commits as fixes and lists kernel version identifiers, but gives no CWE, CVSS vector, crash details, privilege requirements, or exploitability analysis.

Likely exposure

Likely limited to Linux systems using ext4 on kernels that do not include the cited stable fixes or downstream backports. Distribution kernels may have different version strings, so package changelogs and vendor advisories matter more than upstream version alone.

Exploitation context

The provided sources do not show active exploitation, proof-of-concept availability, KEV listing, or remote exploitability. Any exploitation assessment beyond a local filesystem operation context would be unsupported by the supplied evidence.

Researcher notes

Key unknowns are impact, reachability, affected commit ranges, and whether the double unlock can cause denial of service or broader memory corruption. Analysis should stay tied to the upstream ext4 fix commits and downstream backport evidence.

Mitigation direction

  • Check Linux vendor advisories for CVE-2023-53626 applicability.
  • Apply kernel updates that include the cited ext4 stable fixes.
  • Prioritize multi-user systems and hosts running untrusted local workloads.
  • Plan maintenance windows because kernel fixes usually require reboot.
  • Avoid claiming remediation complete based only on upstream version numbers.

Validation and detection

  • Inventory Linux hosts using ext4 filesystems.
  • Record running kernel versions and installed kernel package versions.
  • Check vendor changelogs for CVE-2023-53626 or cited commit backports.
  • Confirm hosts booted into the updated kernel after patching.
  • Monitor kernel logs for ext4 or locking-related warnings after update.
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2023-53626 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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
3Timeline events
0ADP providers
7Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux8dac5a63cf79707b547ea3d425fead5f4482198f, 0c440f14558bfacd22c6935ae1fd4b2a09e96b5d, c50fc503ee1b97f12c98e26afc39fdaebebcf04f, b0bb13612292ca90fa4c2a7e425375649bc50d3e, 291cd19d107e197306869cb3237c1bba62d13182, 0813299c586b175d7edb25f56412c54b812d0379unaffected
LinuxLinux5.4.237, 5.10.175, 5.15.103, 6.1.20, 6.2.7unaffected
Weakness

CWE details

No CWE listed

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