CVE-2022-50622

Kernel memory leak via lost krealloc pointer

Published Dec 8, 2025 · Updated May 11, 2026

Memory leak in the Linux kernel allows attackers to leave kernel allocations unreclaimed during ext4 fast-commit inode recording. In ext4_fc_record_modified_inode(), a failed krealloc overwrites state->fc_modified_inodes with NULL before the old allocation can be freed. The published record does not identify how attackers can force the allocation failure or whether repeated leaks can interrupt service.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Linux kernel allows attackers to leave kernel allocations unreclaimed during ext4 fast-commit inode recording. In ext4_fc_record_modified_inode(), a failed krealloc overwrites state->fc_modified_inodes with NULL before the old allocation can be freed. The published record does not identify how attackers can force the allocation failure or whether repeated leaks can interrupt service.

The record

CVE
CVE-2022-50622
Published
Dec 8, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 8, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.10
  2. Affected versionversion=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <24d39affc6be1acf6df86a8c3e2413b8a73749c7
  3. Affected versionversion=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <9305721a309fa1bd7c194e0d4a2335bf3b29dca4
  4. Affected versionversion=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <9b5eb368a86f97eb9831f5b53b8e43ec69bc7cd4
  5. Affected versionversion=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <c0be17635f039f864b1108efec0015c73736e414
  6. Affected versionversion=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <c9ce7766dc4e88e624c62a68221a3bbe8f06e856

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <24d39affc6be1acf6df86a8c3e2413b8a73749c7; version=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <9305721a309fa1bd7c194e0d4a2335bf3b29dca4; version=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <9b5eb368a86f97eb9831f5b53b8e43ec69bc7cd4; version=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <c0be17635f039f864b1108efec0015c73736e414; version=8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 <c9ce7766dc4e88e624c62a68221a3bbe8f06e856

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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