CVE-2026-43383
Not scored
net/tcp-md5: Fix MAC comparison to be constant-time
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.
Exploit probability
0.4%
Published
May 8, 2026
Required by
Not available
Last source change
July 22, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2026-43383
View original source
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/02669e2a4d207068edce7e8b5fafd85822018ce6
- https://git.kernel.org/stable/c/345a9530756528d7ca407663d659c3c40e75c3dd
- https://git.kernel.org/stable/c/46d0d6f50dab706637f4c18a470aac20a21900d3
- https://git.kernel.org/stable/c/5d305a95130a8d08b9545e47f1e18d29d59866cb
- https://git.kernel.org/stable/c/821c8751fdeecdeecabeb11704dd33439c9e4bbc
- https://git.kernel.org/stable/c/ae3831b44f477de048287493e184fc3ff913b624
- https://git.kernel.org/stable/c/b502e97e29d791ff7a8051f29a414535739be218
- https://git.kernel.org/stable/c/ff44ec94d4fc8348600a69de0a8fa1102c23bce8
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43383.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-43383