CVE-2022-49289: linux kernel Integer Overflow — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: uaccess: fix integer overflow on access_ok() Three architectures check the end of a user access against the address limit without taking a possible overflow into account. Passing a negative length or another overflow in here returns success when it should not. Use the most common correct implementation here, which optimizes for a constant 'size' argument, and turns the common case into a single comparison.

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CVSS v3.1 Score

7.1

HIGH

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

Weakness Type (CWE)

CWE-190 Integer Overflow

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.2 — 5.15.32
linux	linux_kernel	5.16 — 5.16.18
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/222ca305c9fd39e5ed8104da25c09b2b79a516a8 https://git.kernel.org/stable/c/99801e2f457824955da4aadaa035913a6dede03a https://git.kernel.org/stable/c/a1ad747fc1a0e06d1bf26b996ee8a56b5c8d02d8 https://git.kernel.org/stable/c/e65d28d4e9bf90a35ba79c06661a572a38391dec

Frequently Asked Questions

What is CVE-2022-49289? +

In the Linux kernel, the following vulnerability has been resolved: uaccess: fix integer overflow on access_ok() Three architectures check the end of a user access against the address limit without taking a possible overflow into account. Passing a negative length or another overflow in here returns success when it should not. Use the most common correct implementation here, which optimizes for a constant 'size' argument, and turns the common case into a single comparison. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2022-49289? +

CVE-2022-49289 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2022-49289? +

CVE-2022-49289 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-2022-49289? +

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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