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CVE-2022-49075

17
FAUCET Score

CVE-2022-49075 is a vulnerability in the Linux kernel's Btrfs filesystem, specifically affecting how qgroup limits are enforced during fallocate operations. It allows a local attacker to exceed configured qgroup storage limits, leading to a denial of service. With a CVSS score of 5.5 (MEDIUM), it has low attack complexity and requires local privileges, but can result in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.14.276CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.238CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.189CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.111CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.34CPE matchmatch criteria
cpe:2.3:o: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
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 69th 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 (1)

redhatCVE-2022-49075

kernel: btrfs: fix qgroup reserve overflow the qgroup limit

Feb 26, 2025

References

git.kernel.org / stable/c/0355387ea5b02d353c9415613fab908fac5c52a6
Patch
git.kernel.org / stable/c/44277c50fdba5019ca25bfad1b71e2561b0de11b
Patch
git.kernel.org / stable/c/4b98799e181b4326a613108cf37acc1f55d21b45
Patch
git.kernel.org / stable/c/6bfff81286d4491f02dad7814bae5c77c9ad2320
Patch
git.kernel.org / stable/c/7941b74ed49b6db25efbef2256ebef843c11a010
Patch
git.kernel.org / stable/c/82ae73ac963cee877ce34f7c31b2b456b516e96c
Patch
git.kernel.org / stable/c/b642b52d0b50f4d398cb4293f64992d0eed2e2ce
Patch
git.kernel.org / stable/c/f3d97b22a708bf9e3f3ac2ba232bcefd0b0c136b
Patch