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kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout

🗓️ 14 Mar 2022 10:52:04Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 7 Views

Local privilege escalation via fsconfig in cgroup version one parser causes container breakout and denial.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8ppc64lekpatch-patch-4_18_0-3480:1-3.el8kpatch-patch-4_18_0-348-0:1-3.el8.ppc64le.rpm
Red Hat Enterprise Linux8x86_64kpatch-patch-4_18_0-3480:1-3.el8kpatch-patch-4_18_0-348-0:1-3.el8.x86_64.rpm
Red Hat Enterprise Linux8ppc64lekpatch-patch-4_18_0-348-debuginfo0:1-3.el8kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.ppc64le.rpm
Red Hat Enterprise Linux8x86_64kpatch-patch-4_18_0-348-debuginfo0:1-3.el8kpatch-patch-4_18_0-348-debuginfo-0:1-3.el8.x86_64.rpm
Red Hat Enterprise Linux8ppc64lekpatch-patch-4_18_0-348-debugsource0:1-3.el8kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.ppc64le.rpm
Red Hat Enterprise Linux8x86_64kpatch-patch-4_18_0-348-debugsource0:1-3.el8kpatch-patch-4_18_0-348-debugsource-0:1-3.el8.x86_64.rpm
Red Hat Enterprise Linux8ppc64lekpatch-patch-4_18_0-348_12_20:1-1.el8_5kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.ppc64le.rpm
Red Hat Enterprise Linux8x86_64kpatch-patch-4_18_0-348_12_20:1-1.el8_5kpatch-patch-4_18_0-348_12_2-0:1-1.el8_5.x86_64.rpm
Red Hat Enterprise Linux8ppc64lekpatch-patch-4_18_0-348_12_2-debuginfo0:1-1.el8_5kpatch-patch-4_18_0-348_12_2-debuginfo-0:1-1.el8_5.ppc64le.rpm
Red Hat Enterprise Linux8x86_64kpatch-patch-4_18_0-348_12_2-debuginfo0:1-1.el8_5kpatch-patch-4_18_0-348_12_2-debuginfo-0:1-1.el8_5.x86_64.rpm
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28 Jun 2026 12:36Current
7.1High risk
Vulners AI Score7.1
CVSS 27.2
CVSS 3.18.8
EPSS0.01206
7