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F5 BIG-IP - SOL31026324 - Linux kernel vulnerabilities CVE-2015-2925, CVE-2015-5307, and CVE-2015-8104

Information

Severity

Severity

Medium

Family

Family

F5 Local Security Checks

CVSSv2 Base

CVSSv2 Base

6.9

CVSSv2 Vector

CVSSv2 Vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

3 years ago

Summary

The remote host is missing a security patch.

Insight

Insight

CVE-2015-2925 The prepend_path function in fs/dcache.c in the Linux kernel before 4.2.4 does not properly handle rename actions inside a bind mount, which allows local users to bypass an intended container protection mechanism by renaming a directory, related to a 'double-chroot attack'. CVE-2015-5307 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c. CVE-2015-8104 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

See the referenced vendor advisory for a solution.

Common Vulnerabilities and Exposures (CVE)