SARA / Free Tools / CVE / CVE-2023-2593

CVE-2023-2593 — A flaw exists within the Linux kernel's handling of new TCP connections

A flaw exists within the Linux kernel's handling of new TCP connections. The issue results from the lack of memory release after its effective lifetime. This vulnerability allows an unauthenticated attacker to create a denial of service condition on the system.

CVSS
5.9 MEDIUM
EPSS
0.68% (top 52.30%)
CWE
—
Published
2025-07-30T16:15:25.980
Last modified
2026-06-29T23:16:40.630
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

01What is this vulnerability?

A flaw exists within the Linux kernel's handling of new TCP connections. The issue results from the lack of memory release after its effective lifetime. This vulnerability allows an unauthenticated attacker to create a denial of service condition on the system.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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