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Description

In the Linux kernel, the following vulnerability has been resolved: nstree: tighten permission checks for listing 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.

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

Product status

Default status
unaffected

76b6f5dfb3fda76fce1f9990d6fa58adc711122b (git) before 0abd81645fc95ec6a9d4e4813000f22c5efc0ff4
affected

76b6f5dfb3fda76fce1f9990d6fa58adc711122b (git) before 8d76afe84fa2babf604b3c173730d4d2b067e361
affected

Default status
affected

6.19
affected

Any version before 6.19
unaffected

6.19.9 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/0abd81645fc95ec6a9d4e4813000f22c5efc0ff4

git.kernel.org/...c/8d76afe84fa2babf604b3c173730d4d2b067e361

cve.org (CVE-2026-43390)

nvd.nist.gov (CVE-2026-43390)

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