SARA / Free Tools / CVE / CVE-2023-53803

CVE-2023-53803 — In the Linux kernel, the following vulnerability has been resolved:

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

CVSS

8.1 HIGH

EPSS

0.29% (top 79.90%)

CWE

—

Published

2025-12-09T01:16:52.130

Last modified

2026-10-15T22:17:49.230

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/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/0dfe68394cbe1d4fe579fb325ecc813c50528c5a
git.kernel.org — https://git.kernel.org/stable/c/2b28a7d261cb309912596d6a2d383ca370483527
git.kernel.org — https://git.kernel.org/stable/c/467afb1dd630d8c6d172bd6cacc125199b5f4f2d
git.kernel.org — https://git.kernel.org/stable/c/799e8dd2022d2e13f0c5c1906b40ceca07a23349
git.kernel.org — https://git.kernel.org/stable/c/9b4f5028e493cb353a5c8f5c45073eeea0303abd
git.kernel.org — https://git.kernel.org/stable/c/9e5c7d52085b8c84bc82a261580f0eb170039325
git.kernel.org — https://git.kernel.org/stable/c/da1a955c48a16e16e925d6544793914e52a6fa51
git.kernel.org — https://git.kernel.org/stable/c/e4dd25da784b2e07dbfbf04509afa4c5a1375227

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