btrfs: zoned: clone zoned device info when cloning a device (CVE-2022-49833) | HOL Guard CVE

Medium · CVSS 5.5CVE-2022-49833

btrfs: zoned: clone zoned device info when cloning a device

Answer in brief

CVE-2022-49833 records a Medium severity (CVSS 5.5) vulnerability in btrfs: zoned: clone zoned device info when cloning a device. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 1, 2025Updated Aug 15, 2026Source checked Sep 29, 2026First seen by HOL Aug 15, 2026Material review Aug 15, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.5
Exploitation: Not marked as known exploited
Affected software: 7 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.1:rc1::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.1:rc2::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.1:rc3::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.1:rc4::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=7365104236ade0bf22edd7724c8fd438b0342ee4 <ad88cabcec942c033f980cd1e28d56ecdaf5f3b8 \|\| >=7365104236ade0bf22edd7724c8fd438b0342ee4 <21e61ec6d0bb786818490e926aa9aeb4de95ad0d	ad88cabcec942c033f980cd1e28d56ecdaf5f3b8, 21e61ec6d0bb786818490e926aa9aeb4de95ad0d
Linux/Linuxgeneric	5.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to ad88cabcec942c033f980cd1e28d56ecdaf5f3b8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 1, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: clone zoned device info when cloning a device When cloning a btrfs_device, we're not cloning the associated btrfs_zoned_device_info structure of the device in case of a zoned filesystem. Later on this leads to a NULL pointer dereference when accessing the device's zone_info for instance when setting a zone as active. This was uncovered by fstests' testcase btrfs/161.

Quoted source text, attributed separately from HOL analysis.