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CVE Record

CVE-2022-50622: ext4: fix potential memory leak in ext4_fc_record_modified_inode()

In the Linux kernel, the following vulnerability has been resolved: ext4: fix potential memory leak in ext4_fc_record_modified_inode() As krealloc may return NULL, in this case 'state->fc_modified_inodes' may not be freed by krealloc, but 'state->fc_modified_inodes' already set NULL. Then will lead to 'state->fc_modified_inodes' memory leak.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-50622 is a Linux kernel ext4 memory leak fixed in stable kernel commits. The issue occurs when memory reallocation fails while tracking modified inodes for ext4 fast commits. Business risk is mainly reliability: repeated leaks could pressure kernel memory. The public bundle provides no CVSS score and no evidence of active exploitation.

Executive priority

Treat as a routine kernel reliability fix unless your environment has high-risk ext4 workloads or strict uptime requirements. Patch through normal kernel maintenance, prioritizing critical Linux systems. No source provided evidence of active exploitation or remote compromise.

Technical view

In ext4_fc_record_modified_inode(), krealloc() can return NULL. The vulnerable logic may set state->fc_modified_inodes to NULL without preserving or freeing the prior allocation, leaking memory. The CVE record lists Linux kernel affected versions and references stable fixes, but distro-specific affected and fixed package versions require vendor confirmation.

Likely exposure

Exposure is most likely on Linux systems using ext4 on kernel lines identified by the CVE record, before the referenced stable fixes. Distribution kernels may have backported patches, so version strings alone may not prove exposure.

Exploitation context

The source bundle does not define attacker requirements, attack vector, or exploitability. It does not show KEV listing or active exploitation. The defect is in kernel filesystem code and is relevant where ext4 fast-commit paths are exercised.

Researcher notes

The key code pattern is loss of the original state->fc_modified_inodes pointer when krealloc() fails. Public data lacks CVSS, CWE, and clear exploit prerequisites. Use kernel stable commits and distributor advisories as authoritative remediation references.

Mitigation direction

  • Apply Linux kernel updates from your distribution or vendor containing the referenced stable fixes.
  • Prioritize critical Linux servers using ext4 filesystems.
  • Check vendor advisories for exact fixed package versions and backport status.
  • If no update is available, follow vendor guidance rather than applying unsupported workarounds.

Validation and detection

  • Inventory Linux kernel versions across ext4-based systems.
  • Check package changelogs for CVE-2022-50622 or the referenced kernel commits.
  • Confirm whether distribution kernels have backported the fix.
  • Monitor affected systems for unusual kernel memory pressure until patched.
Prepared
Confidence
medium
Sources
7

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.

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CVE-2022-50622 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
6Source 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
LinuxLinux8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2, 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2, 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2, 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2, 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2unaffected
LinuxLinux5.10, 0, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 6.1affected
Weakness

CWE details

No CWE listed

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