CVE-2021-46911

Linux Kernel vulnerability

9.8 CRITICALEPSS 0.60%

Published27 Feb 2024

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Linux Kernel≥ 5.11.0 < 5.11.16 · ≥ 5.7.0 < 5.10.32

Remediation

Fixed in

Linux Kernel≥ 5.11.16

Patch & vendor advisories

References

Frequently asked

Is CVE-2021-46911 being actively exploited?

CVE-2021-46911 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.60%.

How severe is CVE-2021-46911?

CVE-2021-46911 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.60% probability of exploitation.

Which products are affected by CVE-2021-46911?

Affected products include Linux Kernel.

How do I fix CVE-2021-46911?

Upgrade affected software to a fixed version, for example Linux Kernel 5.11.16 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-46911 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.