5.5

CVE-2026-23405

apparmor: fix: limit the number of levels of policy namespaces

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.36.1 < 5.10.253
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.203
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.169
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.130
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.77
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.18
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.8
Linux ≫ Linux Kernel Version2.6.36 Update-
Linux ≫ Linux Kernel Version7.0 Updaterc1
Linux ≫ Linux Kernel Version7.0 Updaterc2
Linux ≫ Linux Kernel Version7.0 Updaterc3
Linux ≫ Linux Kernel Version7.0 Updaterc4
Linux ≫ Linux Kernel Version7.0 Updaterc5
Linux ≫ Linux Kernel Version7.0 Updaterc6
Linux ≫ Linux Kernel Version7.0 Updaterc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.077
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/3f8699b3ee0c04b4b9bc27b82cd89a40e81e1d2e
Patch
https://git.kernel.org/stable/c/853ce31ca72097d23991a06876a2ccb5cb64b603
Patch
https://git.kernel.org/stable/c/d42b2b6bb77ca40ee34ab74ad79305840b5f315d
Patch
https://git.kernel.org/stable/c/7b6495ead2c611647f6b11441a852324e3eb8616
Patch
https://git.kernel.org/stable/c/306039414932c80f8420695a24d4fe10c84ccfb2
Patch
https://git.kernel.org/stable/c/6b396cc2f0365e684fc1d3547d18ef79fcee225d
Patch
https://git.kernel.org/stable/c/87d0cecc900e55d55fc4dbfb43ac93e269c7a5b3
Patch
https://git.kernel.org/stable/c/b1226e37eb3754d389721c135db6107db94c7a72
Patch