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CVE-2015-2925

UnknownEPSS 1.25%

Last modified

CVE-2015-2925 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

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."

Metrics

EPSS Probability
1.25%

65.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
LinuxLinux Kernel< 3.2.72
LinuxLinux Kernel>= 3.3, < 3.4.110
LinuxLinux Kernel>= 3.5, < 3.10.91
LinuxLinux Kernel>= 3.11, < 3.12.49
LinuxLinux Kernel>= 3.13, < 3.14.55
LinuxLinux Kernel>= 3.15, < 3.16.35
LinuxLinux Kernel>= 3.17, < 3.18.23
LinuxLinux Kernel>= 3.19, < 4.1.11
LinuxLinux Kernel>= 4.2, < 4.2.4
DebianDebian Linux7.0
DebianDebian Linux8.0
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux15.04

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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."
How severe is CVE-2015-2925?
Severity scoring for CVE-2015-2925 is pending analysis. The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.
How do I fix CVE-2015-2925?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST