CVE-2022-49645: linux kernel Memory Corruption — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: drm/panfrost: Fix shrinker list corruption by madvise IOCTL Calling madvise IOCTL twice on BO causes memory shrinker list corruption and crashes kernel because BO is already on the list and it's added to the list again, while BO should be removed from the list before it's re-added. Fix it.

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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

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.4 — 5.4.207
linux	linux_kernel	5.5 — 5.10.132
linux	linux_kernel	5.11 — 5.15.56
linux	linux_kernel	5.16 — 5.18.13
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/0581613df7f9a4c5fac096ce1d5fb15b7b994240 https://git.kernel.org/stable/c/1807d8867402a58b831a7fc16832747ff559a0d1 https://git.kernel.org/stable/c/393594aad55179eb761af41533d8d1d6eb4543b0 https://git.kernel.org/stable/c/9fc33eaaa979d112d10fea729edcd2a2e21aa912 https://git.kernel.org/stable/c/f036392edd9c49090781d8cca26ad6557a63bae4

Frequently Asked Questions

What is CVE-2022-49645? +

In the Linux kernel, the following vulnerability has been resolved: drm/panfrost: Fix shrinker list corruption by madvise IOCTL Calling madvise IOCTL twice on BO causes memory shrinker list corruption and crashes kernel because BO is already on the list and it's added to the list again, while BO should be removed from the list before it's re-added. Fix it. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49645? +

CVE-2022-49645 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-2022-49645? +

CVE-2022-49645 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-2022-49645? +

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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