CVE-2026-43403
8.8 HIGHIn the Linux kernel, the following vulnerability has been resolved: nsfs: tighten permission checks for ns iteration ioctls Even privil...
Published: 2026-05-08 · Last updated: 2026-05-21
Severity and scoring
- CVSS
- 8.8 HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-43403
- [Patch]https://git.kernel.org/stable/c/0ad650e60150eda789deca5e78a6a09d26bf8fc9
- [Patch]https://git.kernel.org/stable/c/2f3dea284c761c890d676f77d5e55c0c496b4ef4
- [Patch]https://git.kernel.org/stable/c/3376b345df155ca36d8611857b41ff7d5183fc38
- [Patch]https://git.kernel.org/stable/c/e6b899f08066e744f89df16ceb782e06868bd148
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