CVE-2021-46911: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ch_ktls: Fix kernel panic Taking page refcount is not ideal and causes kernel panic sometimes. It's better to take tx_ctx lock for the complete skb transmit, to avoid page cleanup if ACK received in middle.

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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	5.7.0 — 5.10.32
linux	linux_kernel	5.11.0 — 5.11.16

References

Advisories & Patches

https://git.kernel.org/stable/c/1a73e427b824133940c2dd95ebe26b6dce1cbf10 https://git.kernel.org/stable/c/8348665d4181c68b0ca1205b48e1753d78bc810f https://git.kernel.org/stable/c/8d5a9dbd2116a852f8f0f91f6fbc42a0afe1091f https://git.kernel.org/stable/c/1a73e427b824133940c2dd95ebe26b6dce1cbf10 https://git.kernel.org/stable/c/8348665d4181c68b0ca1205b48e1753d78bc810f https://git.kernel.org/stable/c/8d5a9dbd2116a852f8f0f91f6fbc42a0afe1091f

Frequently Asked Questions

What is CVE-2021-46911? +

In the Linux kernel, the following vulnerability has been resolved: ch_ktls: Fix kernel panic Taking page refcount is not ideal and causes kernel panic sometimes. It's better to take tx_ctx lock for the complete skb transmit, to avoid page cleanup if ACK received in middle. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-46911? +

CVE-2021-46911 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-2021-46911? +

CVE-2021-46911 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-2021-46911? +

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-2021-46911