CVE-2026-43384

CRITICAL EPSS 36.4%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: 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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
36.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥6.7  –  <6.12.78
linuxlinux_kernel*≥6.13  –  <6.18.19
linuxlinux_kernel*≥6.19  –  <6.19.9
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/080b0e210088296dd50d6637c06c1db14246adfe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/67edfec516d30d3e62925c397be4a1e5185802fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8be6ed64966da48b6c4726918f106c18742a5125
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a269cbdc442f8658bca35383e34b9d0b0ff95a1c
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/080b0e210088296dd50d6637c06c1db14246adfe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/67edfec516d30d3e62925c397be4a1e5185802fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8be6ed64966da48b6c4726918f106c18742a5125
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a269cbdc442f8658bca35383e34b9d0b0ff95a1c
    Patch