Review reviewHigh

CVE-2022-49999

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix space cache corruption and potential double allocations When testing space_cache v2 on a large set of machines, we encountered a few symptoms: 1. "unable to add free space :-17" (EEXIST) errors. 2. Missing free space info items, sometimes caught with a "missing free space info for X" error. 3. Double-accounted space: ranges that were allocated in the extent tree and also marked as free in the free space tree, ranges that were marked as allocated twice in the extent tree, or ranges that were marked as free twice i...

CVSS: 7.8
EPSS: 0.21%
CISA KEV: Not listed
Published: 2025.06.18

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.21%

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= d0c2f4fa555e70324ec2a129b822ab58f172cc62 < 92dc4c1a8e58bcc7a183a4c86b055c24cc88d967, >= d0c2f4fa555e70324ec2a129b822ab58f172cc62 < a2e54eb64229f07f917b05d0c323604fda9b89f7, >= d0c2f4fa555e70324ec2a129b822ab58f172cc62 < ced8ecf026fd8084cf175530ff85c76d6085d715, >= 5.12, >= 5.12 < 5.15.65, >= 5.16 < 5.19.6, 6.0
Fixed versions: 5.15.65, 5.19.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-787