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CVE-2024-26944

22
FAUCET Score

CVE-2024-26944 is a use-after-free vulnerability in the Linux kernel's Btrfs file system, specifically within the zoned functionality. This flaw occurs during a device replacement operation, where the system attempts to access stale zone information from a device that has already been freed, leading to system instability. The vulnerability is rated as High severity (CVSS 7.8), indicating that a local attacker with low privileges could exploit it to achieve high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.16, < 6.8.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 44th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (2)

microsoft2024-May/CVE-2024-26944

btrfs: zoned: fix use-after-free in do_zone_finish()

May 14, 2024
redhatCVE-2024-26944Moderate

kernel: btrfs: zoned: fix use-after-free in do_zone_finish()

May 1, 2024

References

git.kernel.org / stable/c/1ec17ef59168a1a6f1105f5dc517f783839a5302
Patch
git.kernel.org / stable/c/34ca809e055eca5cfe63d9c7efbf80b7c21b4e57
Patch