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CVE-2026-43383

nvd nist
Published: May 8, 2026Modified: Oct 19, 2026

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9.4
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Exploitability: 3.9 / Impact: 5.5
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Description

In the Linux kernel, the following vulnerability has been resolved: net/tcp-md5: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.

Affected (8)

Products: Linux: Linux Kernel
Linux
1 product
Linux Kernel
Configuration A
8 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
2.6.20 ≤ version < 5.10.253
Linux Kernel
5.11 ≤ version < 6.1.167
Linux Kernel
6.13 ≤ version < 6.18.19
Linux Kernel
6.19 ≤ version < 6.19.9
Linux Kernel
6.2 ≤ version < 6.6.130
Linux Kernel
6.7 ≤ version < 6.12.78
Linux Kernel
Version 7.0 rc1
Linux Kernel
Version 7.0 rc2

Related CWEs

CWE-208
Observable Timing Discrepancy
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (8)

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Timeline

No history available yet.