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CVE-2021-46911

ch_ktls: Fix kernel panic

MEDIUM
5.5
CVSS Score
Published: February 27, 2024 at 06:53 AM UTC
Updated: August 5, 2026 at 09:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.11.0 ≤ v < 5.11.165.7 ≤ v < 5.10.325.7 ≤ v < 5.11.165.7 ≤ v < 5.125.7.0 ≤ v < 5.10.325.75a4b9fe7fece62ecab6fb28fe92362f83b41c33e
Vendor states this is fixed in 1a73e427b824133940c2dd95ebe26b6dce1cbf10 (fixed)
Vendor states this is fixed in 8348665d4181c68b0ca1205b48e1753d78bc810f (fixed)
Vendor states this is fixed in 8d5a9dbd2116a852f8f0f91f6fbc42a0afe1091f (fixed)
Vendor states this is fixed in 5.10.32 (unaffected)
Vendor states this is fixed in 5.11.16 (unaffected)
Vendor states this is fixed in 5.12 (unaffected)
Vendor states this is fixed in 5.7 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1a73e427b824133940c2dd95ebe26b6dce1cbf10
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8348665d4181c68b0ca1205b48e1753d78bc810f
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8d5a9dbd2116a852f8f0f91f6fbc42a0afe1091f

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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