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CVE-2023-53590

20
FAUCET Score

CVE-2023-53590 is a denial-of-service vulnerability in the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation. It affects Linux kernel versions and arises from an inefficient nested loop in the sctp_sched_prio_free_sid() function, which can lead to a soft lockup. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.10.158, < 5.10.173CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.15.82, < 5.15.100CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.4.226, < 5.4.235CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.0.12, < 6.1CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.4.226, < 5.4.235CPE 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
0.11%
Probability of exploitation in next 30 days
EPSS Percentile
1.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0011 is in the 9th 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-2023-53590Moderate

kernel: sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop

Oct 4, 2025

References

git.kernel.org / stable/c/03c3a5584a0a29821e59b7834635ce823050caaa
Patch
git.kernel.org / stable/c/68ba44639537de6f91fe32783766322d41848127
Patch
git.kernel.org / stable/c/6d529928ea212127851a2df8c40d822237ca946b
Patch
git.kernel.org / stable/c/8ee401f89cdb10f39098c0656d695b2bc4052100
Patch
git.kernel.org / stable/c/bf5540cbd20e2dae2c81ab9b31deef41ef147d0a
Patch
git.kernel.org / stable/c/cec326443f01283ef68ea00c06ea073b1835a562
Patch