Critical severity9.4NVD Advisory· Published May 8, 2026· Updated Jun 19, 2026
CVE-2026-43383
CVE-2026-43383
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
18- osv-coords14 versionspkg:linux/kernelpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
>= 2.6.20, < 5.10.253+ 13 more
- (no CPE)range: >= 2.6.20, < 5.10.253
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1.160000.2.17
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/02669e2a4d207068edce7e8b5fafd85822018ce6nvdPatch
- git.kernel.org/stable/c/345a9530756528d7ca407663d659c3c40e75c3ddnvdPatch
- git.kernel.org/stable/c/46d0d6f50dab706637f4c18a470aac20a21900d3nvdPatch
- git.kernel.org/stable/c/5d305a95130a8d08b9545e47f1e18d29d59866cbnvdPatch
- git.kernel.org/stable/c/821c8751fdeecdeecabeb11704dd33439c9e4bbcnvdPatch
- git.kernel.org/stable/c/ae3831b44f477de048287493e184fc3ff913b624nvdPatch
- git.kernel.org/stable/c/b502e97e29d791ff7a8051f29a414535739be218nvdPatch
- git.kernel.org/stable/c/ff44ec94d4fc8348600a69de0a8fa1102c23bce8nvd
News mentions
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