CVE-2021-47336

HIGH
Published May 21, 2024 Modified May 12, 2025

Description

In the Linux kernel, the following vulnerability has been resolved: smackfs: restrict bytes count in smk_set_cipso() Oops, I failed to update subject line. From 07571157c91b98ce1a4aa70967531e64b78e8346 Mon Sep 17 00:00:00 2001 Date: Mon, 12 Apr 2021 22:25:06 +0900 Subject: [PATCH] smackfs: restrict bytes count in smk_set_cipso() Commit 7ef4c19d245f3dc2 ("smackfs: restrict bytes count in smackfs write functions") missed that count > SMK_CIPSOMAX check applies to only format == SMK_FIXED24_FMT case.

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/135122f174c357b7a3e58f40fa5792156c5e93e6 https://git.kernel.org/stable/c/258fd821f69378453c071b9dd767b298810fc766 https://git.kernel.org/stable/c/3780348c1a0e14ffefcaf1fc521f815bcaac94b0 https://git.kernel.org/stable/c/49ec114a6e62d8d320037ce71c1aaf9650b3cafd https://git.kernel.org/stable/c/5c2dca9a7a7ff6a2df34158903515e2e4fd3d2b2 https://git.kernel.org/stable/c/5f9880403e6b71d56924748ba331daf836243fca https://git.kernel.org/stable/c/8f5c773a2871cf446e3f36b2834fb25bbb28512b https://git.kernel.org/stable/c/cbd87ba6a13891acf6180783f8234a8b7a3e3d4d https://git.kernel.org/stable/c/135122f174c357b7a3e58f40fa5792156c5e93e6 https://git.kernel.org/stable/c/258fd821f69378453c071b9dd767b298810fc766 https://git.kernel.org/stable/c/3780348c1a0e14ffefcaf1fc521f815bcaac94b0 https://git.kernel.org/stable/c/49ec114a6e62d8d320037ce71c1aaf9650b3cafd https://git.kernel.org/stable/c/5c2dca9a7a7ff6a2df34158903515e2e4fd3d2b2 https://git.kernel.org/stable/c/5f9880403e6b71d56924748ba331daf836243fca https://git.kernel.org/stable/c/8f5c773a2871cf446e3f36b2834fb25bbb28512b https://git.kernel.org/stable/c/cbd87ba6a13891acf6180783f8234a8b7a3e3d4d

Frequently Asked Questions

What is CVE-2021-47336? +
In the Linux kernel, the following vulnerability has been resolved: smackfs: restrict bytes count in smk_set_cipso() Oops, I failed to update subject line. From 07571157c91b98ce1a4aa70967531e64b78e8346 Mon Sep 17 00:00:00 2001 Date: Mon, 12 Apr 2021 22:25:06 +0900 Subject: [PATCH] smackfs: restrict bytes count in smk_set_cipso() Commit 7ef4c19d245f3dc2 ("smackfs: restrict bytes count in smackfs write functions") missed that count > SMK_CIPSOMAX check applies to only format == SMK_FIXED24_FMT case. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2021-47336? +
CVE-2021-47336 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2021-47336? +
CVE-2021-47336 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2021-47336? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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