CVE-2026-43403
nsfs: tighten permission checks for ns iteration ioctls
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: nsfs: tighten permission checks for ns iteration ioctls Even privileged services should not necessarily be able to see other privileged service's namespaces so they can't leak information to each other. Use may_see_all_namespaces() helper that centralizes this policy until the nstree adapts.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 8, 2026 |
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Affected Versions
Linux / Linux
a1d220d9dafa8d76ba60a784a1016c3134e6a1e8 < 3376b345df155ca36d8611857b41ff7d5183fc38 a1d220d9dafa8d76ba60a784a1016c3134e6a1e8 < 2f3dea284c761c890d676f77d5e55c0c496b4ef4 a1d220d9dafa8d76ba60a784a1016c3134e6a1e8 < 0ad650e60150eda789deca5e78a6a09d26bf8fc9 a1d220d9dafa8d76ba60a784a1016c3134e6a1e8 < e6b899f08066e744f89df16ceb782e06868bd148
Linux / Linux
6.12
References
git.kernel.org: https://git.kernel.org/stable/c/3376b345df155ca36d8611857b41ff7d5183fc38 git.kernel.org: https://git.kernel.org/stable/c/2f3dea284c761c890d676f77d5e55c0c496b4ef4 git.kernel.org: https://git.kernel.org/stable/c/0ad650e60150eda789deca5e78a6a09d26bf8fc9 git.kernel.org: https://git.kernel.org/stable/c/e6b899f08066e744f89df16ceb782e06868bd148