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CVE Vulnerability Details :
CVE-2026-43384
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-08 May, 2026 | 14:21
Updated At-11 May, 2026 | 22:23
Rejected At-
▼CVE Numbering Authority (CNA)
net/tcp-ao: Fix MAC comparison to be constant-time

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.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/ipv4/Kconfig
  • net/ipv4/tcp_ao.c
Default Status
unaffected
Versions
Affected
  • From 0a3a809089eb1d4a0a2fd0c16b520d603988c859 before 8be6ed64966da48b6c4726918f106c18742a5125 (git)
  • From 0a3a809089eb1d4a0a2fd0c16b520d603988c859 before a269cbdc442f8658bca35383e34b9d0b0ff95a1c (git)
  • From 0a3a809089eb1d4a0a2fd0c16b520d603988c859 before 080b0e210088296dd50d6637c06c1db14246adfe (git)
  • From 0a3a809089eb1d4a0a2fd0c16b520d603988c859 before 67edfec516d30d3e62925c397be4a1e5185802fc (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/ipv4/Kconfig
  • net/ipv4/tcp_ao.c
Default Status
affected
Versions
Affected
  • 6.7
Unaffected
  • From 0 before 6.7 (semver)
  • From 6.12.78 through 6.12.* (semver)
  • From 6.18.19 through 6.18.* (semver)
  • From 6.19.9 through 6.19.* (semver)
  • From 7.0 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/8be6ed64966da48b6c4726918f106c18742a5125
N/A
https://git.kernel.org/stable/c/a269cbdc442f8658bca35383e34b9d0b0ff95a1c
N/A
https://git.kernel.org/stable/c/080b0e210088296dd50d6637c06c1db14246adfe
N/A
https://git.kernel.org/stable/c/67edfec516d30d3e62925c397be4a1e5185802fc
N/A
Hyperlink: https://git.kernel.org/stable/c/8be6ed64966da48b6c4726918f106c18742a5125
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/a269cbdc442f8658bca35383e34b9d0b0ff95a1c
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/080b0e210088296dd50d6637c06c1db14246adfe
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/67edfec516d30d3e62925c397be4a1e5185802fc
Resource: N/A
Details not found