SARA / Free Tools / CVE / CVE-2023-53521

CVE-2023-53521 — In the Linux kernel, the following vulnerability has been resolved:

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

CVSS

7.1 HIGH

EPSS

0.01% (top 96.90%)

CWE

—

Published

2025-10-01T12:15:56.470

Last modified

2026-04-06T13:09:49.390

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/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/0595cdb587726b4f0fa780eb7462e3679d141e82
git.kernel.org — https://git.kernel.org/stable/c/2fb1fa8425cce2dc4dce298275d22d7077694b73
git.kernel.org — https://git.kernel.org/stable/c/40af9a6deed723485e05b7d3255a28750692e8db
git.kernel.org — https://git.kernel.org/stable/c/578797f0c8cbc2e3ec5fc0dab87087b4c7073686
git.kernel.org — https://git.kernel.org/stable/c/76f7050537476ac062ec23a544fbca8270f2d08b
git.kernel.org — https://git.kernel.org/stable/c/82143faf01dda831b89eccef60c39ef8575ab08a
git.kernel.org — https://git.kernel.org/stable/c/87e47be38d205df338c52ead43f23b2864567423
git.kernel.org — https://git.kernel.org/stable/c/8f9542cad6c27297c8391de3a659f0b7948495d0

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