CVE-2021-47432: linux kernel Integer Overflow — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Don't overflow in peek() When we started spreading new inode numbers throughout most of the 64 bit inode space, that triggered some corner case bugs, in particular some integer overflows related to the radix tree code. Oops.

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-190 Integer Overflow

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 6.1.64
linux	linux_kernel	6.2 — 6.5.13
linux	linux_kernel	6.6 — 6.6.3

References

Advisories & Patches

https://git.kernel.org/stable/c/784d01f9bbc282abb0c5ade5beb98a87f50343ac https://git.kernel.org/stable/c/9492261ff2460252cf2d8de89cdf854c7e2b28a0 https://git.kernel.org/stable/c/aa7f1827953100cdde0795289a80c6c077bfe437 https://git.kernel.org/stable/c/ec298b958cb0c40d70c68079da933c8f31c5134c https://git.kernel.org/stable/c/784d01f9bbc282abb0c5ade5beb98a87f50343ac https://git.kernel.org/stable/c/9492261ff2460252cf2d8de89cdf854c7e2b28a0 https://git.kernel.org/stable/c/aa7f1827953100cdde0795289a80c6c077bfe437 https://git.kernel.org/stable/c/ec298b958cb0c40d70c68079da933c8f31c5134c

Frequently Asked Questions

What is CVE-2021-47432? +

In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Don't overflow in peek() When we started spreading new inode numbers throughout most of the 64 bit inode space, that triggered some corner case bugs, in particular some integer overflows related to the radix tree code. Oops. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47432? +

CVE-2021-47432 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2021-47432? +

CVE-2021-47432 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-2021-47432? +

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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