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CVE-2023-53660

20
FAUCET Score

CVE-2023-53660 is a vulnerability in the Linux kernel's BPF cpumap component, affecting systems running specific kernel versions. It stems from incorrect handling of skb (socket buffer) memory types during cleanup operations, leading to a kernel warning and potential system instability. With a CVSS score of 5.5 (Medium), this local vulnerability requires low privileges and local access to trigger a high availability impact, but no confidentiality or integrity impact. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.15, < 5.15.126CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.45CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.4.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.5: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
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
4.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 26th 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

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-162.6.1.el9_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.13.1.el9_4
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2023-53660Low

kernel: bpf, cpumap: Handle skb as well when clean up ptr_ring

Oct 7, 2025

References

git.kernel.org / stable/c/7c62b75cd1a792e14b037fa4f61f9b18914e7de1
Patch
git.kernel.org / stable/c/937345720d18f1ad006ba3d5dcb3fa121037b8a2
Patch
git.kernel.org / stable/c/b58d34068fd9f96bfc7d389988dfaf9a92a8fe00
Patch
git.kernel.org / stable/c/cbd000451885801e9bbfd9cf7a7946806a85cb5e
Patch