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CVE-2022-49469

17
FAUCET Score

CVE-2022-49469 describes a resource leak vulnerability (CWE-401) in the Linux kernel's Btrfs filesystem. Specifically, the anon_dev resource is not properly freed when certain functions fail during subvolume creation, leading to a potential denial-of-service. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.8.3, < 5.17.14CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.18, < 5.18.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.8.3, < 5.9CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 70th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (2)

redhatCVE-2022-49469Low

kernel: btrfs: fix anon_dev leak in create_subvol()

Feb 26, 2025
microsoft2025-Feb/CVE-2022-49469Low

btrfs: fix anon_dev leak in create_subvol()

Feb 11, 2025

References

git.kernel.org / stable/c/2256e901f5bddc56e24089c96f27b77da932dfcc
Patch
git.kernel.org / stable/c/7a875ad8706f0903a0e812e0dd701956ee9826ff
Patch
git.kernel.org / stable/c/d887b3de318834f9aa637ecf79c6bc66cba7c69a
Patch