CVE-2022-49074: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Fix GICR_CTLR.RWP polling It turns out that our polling of RWP is totally wrong when checking for it in the redistributors, as we test the *distributor* bit index, whereas it is a different bit number in the RDs... Oopsie boo. This is embarassing. Not only because it is wrong, but also because it took *8 years* to notice the blunder... Just fix the damn thing.

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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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.17 — 4.19.238
linux	linux_kernel	4.20 — 5.4.189
linux	linux_kernel	5.5 — 5.10.111
linux	linux_kernel	5.11 — 5.15.34
linux	linux_kernel	5.16 — 5.16.20
linux	linux_kernel	5.17 — 5.17.3
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/0df6664531a12cdd8fc873f0cac0dcb40243d3e9 https://git.kernel.org/stable/c/3c07cc242baf83f0bddbbd9d7945d0bee56d8b57 https://git.kernel.org/stable/c/60e1eb4811f53f5f60c788297d978515e7a2637a https://git.kernel.org/stable/c/6fef3e3179e6ed8fecdd004ede541674ffa7749d https://git.kernel.org/stable/c/7218a789abb3e033f5f3a85636ca50d9ae7b0fc9 https://git.kernel.org/stable/c/c7daf1b4ad809692d5c26f33c02ed8a031066548 https://git.kernel.org/stable/c/ff24114bb08d8b90edf2aff0a4fd0689523e6c17

Frequently Asked Questions

What is CVE-2022-49074? +

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Fix GICR_CTLR.RWP polling It turns out that our polling of RWP is totally wrong when checking for it in the redistributors, as we test the *distributor* bit index, whereas it is a different bit number in the RDs... Oopsie boo. This is embarassing. Not only because it is wrong, but also because it took *8 years* to notice the blunder... Just fix the damn thing. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49074? +

CVE-2022-49074 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-2022-49074? +

CVE-2022-49074 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-2022-49074? +

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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CVE-2022-49074