CVE-2022-50770

Kernel memory leakage via failed OCFS2 mounts

Published Dec 24, 2025 · Updated Dec 24, 2025

Resource leak in Linux kernel OCFS2 allows attackers with mount access to retain kernel memory through failed mount operations. In ocfs2_mount_volume(), an ocfs2_truncate_log_init() failure leaves replay_map allocated; d_make_root() failure in ocfs2_fill_super() does the same. Triggering either path requires local high-privilege mount access, and repeated failures consume kernel memory without reported data exposure or code execution.

CVSS severity6.7
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in Linux kernel OCFS2 allows attackers with mount access to retain kernel memory through failed mount operations. In ocfs2_mount_volume(), an ocfs2_truncate_log_init() failure leaves replay_map allocated; d_make_root() failure in ocfs2_fill_super() does the same. Triggering either path requires local high-privilege mount access, and repeated failures consume kernel memory without reported data exposure or code execution.

The record

CVE
CVE-2022-50770
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record 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=2.6.30
  2. Affected versionversion=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <2b7e59ed2e77136e9360274f8f0fc208a003e95c
  3. Affected versionversion=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <4efe1d2db731bad19891e2fb9b338724b1f598cc
  4. Affected versionversion=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <50ab0ca3aff4da26037113d69f5a756d8c1a92cd
  5. Affected versionversion=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <7ef516888c4d30ae41bfcd79e7077d86d92794c5
  6. Affected versionversion=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <8059e200259e9c483d715fc2df6340c227c3e196
  7. Affected versionversion=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <ce2fcf1516d674a174d9b34d1e1024d64de9fba3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <2b7e59ed2e77136e9360274f8f0fc208a003e95c; version=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <4efe1d2db731bad19891e2fb9b338724b1f598cc; version=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <50ab0ca3aff4da26037113d69f5a756d8c1a92cd; version=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <7ef516888c4d30ae41bfcd79e7077d86d92794c5; version=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <8059e200259e9c483d715fc2df6340c227c3e196; version=9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 <ce2fcf1516d674a174d9b34d1e1024d64de9fba3

Published CVSS scores

6.7SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
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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