SARA / Free Tools / CVE / CVE-2023-53440

CVE-2023-53440 — In the Linux kernel, the following vulnerability has been resolved:

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

CVSS

7.8 HIGH

EPSS

0.14% (top 96.30%)

CWE

—

Published

2025-09-18T16:15:48.197

Last modified

2026-08-04T10:19:06.723

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/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/1942ccb7d95f287a312fcbabfa8bc9ba501b1953
git.kernel.org — https://git.kernel.org/stable/c/3dbee84bf9e3273c4bb9ca6fc18ff22fba23dd24
git.kernel.org — https://git.kernel.org/stable/c/42560f9c92cc43dce75dbf06cc0d840dced39b12
git.kernel.org — https://git.kernel.org/stable/c/5fe0ea141fbb887d407f1bf572ebf24427480d5c
git.kernel.org — https://git.kernel.org/stable/c/83b16a60e413148685739635901937e2f16a7873
git.kernel.org — https://git.kernel.org/stable/c/d20dcec8f326deb77b6688f8441e014045dac457
git.kernel.org — https://git.kernel.org/stable/c/d540aea451ab5489777a8156560f1388449b3109
git.kernel.org — https://git.kernel.org/stable/c/daf4eb3a908b108279b60172d2f176e70d2df875

Want this in your SOAR or SIEM?
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