CVE-2026-43391
- Source
- https://cve.org/CVERecord?id=CVE-2026-43391
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43391.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-43391
- Downstream
- Published
- 2026-05-08T14:21:36.012Z
- Modified
- 2026-07-08T08:13:29.433605053Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- nsfs: tighten permission checks for handle opening
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
nsfs: tighten permission checks for handle opening
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 mayseeall_namespaces() helper that centralizes this policy until the nstree adapts.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43391.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/1797ee11451f1b2be69863a9f5bd43b948813fdf
- https://git.kernel.org/stable/c/d2324a9317f00013facb0ba00b00440e19d2af5e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43391.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-43391
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git