Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it is possible to create them and nest them arbitrarily deep which can be used to exhaust system resource. Hard cap policy namespaces to the same depth as user namespaces.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
2 versions affected across 1 product
CVE-2026-23405 In the Linux kernel, the following vulnerability has been resolved: apparmor https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-23405
Post summary
The post announces that CVE-2026-23405 in the Linux kernel, related to AppArmor, has been resolved, implying a patch has been applied, but provides no further technical details or evidence of exploitation.
CVE-2026-23405 In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy na… https://www.cve.org/CVERecord?id=CVE-2026-23405
Post summary
The Linux kernel’s AppArmor module has fixed CVE‑2026‑23405 by limiting the number of policy namespace levels. No PoC, exploit, or active exploitation is mentioned.
9 of 9 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | linux | linux_kernel | - | - | - |
| OS | linux | linux_kernel | 2.6.36 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |