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CVE-2024-40944

17
FAUCET Score

CVE-2024-40944 is a medium-severity vulnerability affecting the Linux kernel, specifically related to call depth tracking in the x86 kexec component. It can lead to a system crash (denial of service) due to a fault triggered when call depth tracking is active and the GS segment is reset, causing per-CPU variables to be accessed incorrectly. The vulnerability has a CVSS score of 5.5 (MEDIUM) with a local attack vector and low attack complexity, requiring local privileges. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.2, < 6.6.35CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.7, < 6.9.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
6.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*

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
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 65th 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-2024-40944Moderate

kernel: x86/kexec: Fix bug with call depth tracking

Jul 12, 2024

References

git.kernel.org / stable/c/2cfb464669b645a9b98478b74f2bcea9860dcff1
Patch
git.kernel.org / stable/c/93c1800b3799f17375989b0daf76497dd3e80922
Patch
git.kernel.org / stable/c/d91ddd05082691e69b30744825d18ae799293258
Patch