CVE-2022-48903

Host crash via premature transaction completion

Published Aug 22, 2024 · Updated May 11, 2026

A transaction race in the Linux kernel Btrfs subsystem allows local users to crash systems during filesystem balance operations. btrfs_commit_transaction can report a newer transaction complete while an earlier fsync commit still holds pinned extents, letting relocation remove the corresponding block group too soon. Triggering the kernel BUG requires local access to a Btrfs filesystem and overlapping fsync, transaction-commit, and balance activity; the bounded impact is a host crash.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A transaction race in the Linux kernel Btrfs subsystem allows local users to crash systems during filesystem balance operations. btrfs_commit_transaction can report a newer transaction complete while an earlier fsync commit still holds pinned extents, letting relocation remove the corresponding block group too soon. Triggering the kernel BUG requires local access to a Btrfs filesystem and overlapping fsync, transaction-commit, and balance activity; the bounded impact is a host crash.

The record

CVE
CVE-2022-48903
Published
Aug 22, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 22, 2024CVE 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=5.12
  2. Affected versionversion=d0c2f4fa555e70324ec2a129b822ab58f172cc62 <5fd76bf31ccfecc06e2e6b29f8c809e934085b99
  3. Affected versionversion=d0c2f4fa555e70324ec2a129b822ab58f172cc62 <725a6ac389b182261af174176e561a36b0f39ffc
  4. Affected versionversion=d0c2f4fa555e70324ec2a129b822ab58f172cc62 <a4378947ae39f08c6ae4c6a87ccdebc981a7bbcb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.12; version=d0c2f4fa555e70324ec2a129b822ab58f172cc62 <5fd76bf31ccfecc06e2e6b29f8c809e934085b99; version=d0c2f4fa555e70324ec2a129b822ab58f172cc62 <725a6ac389b182261af174176e561a36b0f39ffc; version=d0c2f4fa555e70324ec2a129b822ab58f172cc62 <a4378947ae39f08c6ae4c6a87ccdebc981a7bbcb

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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