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CVE-2024-56564

17
FAUCET Score

CVE-2024-56564 is a vulnerability in the Linux kernel's Ceph file system component, specifically a reference leak within the ceph_mds_auth_match() function. This issue, resolved by passing a credentials pointer directly, eliminates a redundant function call and prevents an additional reference from being taken. Rated Medium with a CVSS score of 5.5, it has a local attack vector, low attack complexity, and a potential impact of high availability loss (A:H). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.10, < 6.12.4CPE 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
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 44th 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 Patches (1)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2024-56564Low

kernel: ceph: pass cred pointer to ceph_mds_auth_match()

Dec 27, 2024

References

git.kernel.org / stable/c/23426309a4064b25a961e1c72961d8bfc7c8c990
Patch
git.kernel.org / stable/c/ffa6ba7bdb7f07f49c9e9150b0176df066520f62
Patch