SARA / Free Tools / CVE / CVE-2023-52440

CVE-2023-52440 — In the Linux kernel, the following vulnerability has been resolved:

In the Linux kernel, the following vulnerability has been resolved:

CVSS

9.8 CRITICAL

EPSS

21.91% (top 2.60%)

CWE

—

Published

2024-02-21T08:15:45.203

Last modified

2026-08-15T13:17:40.787

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

01What is this vulnerability?

In the Linux kernel, the following vulnerability has been resolved:

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

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

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

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

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

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

git.kernel.org — https://git.kernel.org/stable/c/30fd6521b2fbd9b767e438e31945e5ea3e3a2fba
git.kernel.org — https://git.kernel.org/stable/c/4b081ce0d830b684fdf967abc3696d1261387254
git.kernel.org — https://git.kernel.org/stable/c/7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4
git.kernel.org — https://git.kernel.org/stable/c/bd554ed4fdc3d38404a1c43d428432577573e809
git.kernel.org — https://git.kernel.org/stable/c/ecd7e1c562cb08e41957fcd4b0e404de5ab38e20
git.kernel.org — https://git.kernel.org/stable/c/30fd6521b2fbd9b767e438e31945e5ea3e3a2fba
git.kernel.org — https://git.kernel.org/stable/c/4b081ce0d830b684fdf967abc3696d1261387254
git.kernel.org — https://git.kernel.org/stable/c/7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4
git.kernel.org — https://git.kernel.org/stable/c/bd554ed4fdc3d38404a1c43d428432577573e809
git.kernel.org — https://git.kernel.org/stable/c/ecd7e1c562cb08e41957fcd4b0e404de5ab38e20

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