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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.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-08 | Updated 2026-05-08 | Assigner Linux

Product status

Default status
unaffected

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc (git) before 821c8751fdeecdeecabeb11704dd33439c9e4bbc
affected

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc (git) before 345a9530756528d7ca407663d659c3c40e75c3dd
affected

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc (git) before 5d305a95130a8d08b9545e47f1e18d29d59866cb
affected

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc (git) before 02669e2a4d207068edce7e8b5fafd85822018ce6
affected

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc (git) before ae3831b44f477de048287493e184fc3ff913b624
affected

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc (git) before b502e97e29d791ff7a8051f29a414535739be218
affected

cfb6eeb4c860592edd123fdea908d23c6ad1c7dc (git) before 46d0d6f50dab706637f4c18a470aac20a21900d3
affected

Default status
affected

2.6.20
affected

Any version before 2.6.20
unaffected

5.10.253 (semver)
unaffected

6.1.167 (semver)
unaffected

6.6.130 (semver)
unaffected

6.12.78 (semver)
unaffected

6.18.19 (semver)
unaffected

6.19.9 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/821c8751fdeecdeecabeb11704dd33439c9e4bbc

git.kernel.org/...c/345a9530756528d7ca407663d659c3c40e75c3dd

git.kernel.org/...c/5d305a95130a8d08b9545e47f1e18d29d59866cb

git.kernel.org/...c/02669e2a4d207068edce7e8b5fafd85822018ce6

git.kernel.org/...c/ae3831b44f477de048287493e184fc3ff913b624

git.kernel.org/...c/b502e97e29d791ff7a8051f29a414535739be218

git.kernel.org/...c/46d0d6f50dab706637f4c18a470aac20a21900d3

cve.org (CVE-2026-43383)

nvd.nist.gov (CVE-2026-43383)

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