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CVE-2014-4171

UnknownEPSS 0.44%

Last modified

CVE-2014-4171 is a vulnerability of currently unknown severity. mm/shmem.c in the Linux kernel through 3.15.1 does not properly implement the interaction between range notification and hole punching, which allows local users to cause a denial of service (i_mutex hold) by using the mmap system call to access a hole, as demonstrated by interfering with intended shmem activity by blocking completion of (1) an MADV_REMOVE madvise call or (2) an FALLOC_FL_PUNCH_HOLE fallocate call.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

mm/shmem.c in the Linux kernel through 3.15.1 does not properly implement the interaction between range notification and hole punching, which allows local users to cause a denial of service (i_mutex hold) by using the mmap system call to access a hole, as demonstrated by interfering with intended shmem activity by blocking completion of (1) an MADV_REMOVE madvise call or (2) an FALLOC_FL_PUNCH_HOLE fallocate call.

Metrics

EPSS Probability
0.44%

35.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
LinuxLinux Kernel<= 3.15.1
CanonicalUbuntu Linux12.04

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2014-4171?
mm/shmem.c in the Linux kernel through 3.15.1 does not properly implement the interaction between range notification and hole punching, which allows local users to cause a denial of service (i_mutex hold) by using the mmap system call to access a hole, as demonstrated by interfering with intended shmem activity by blocking completion of (1) an MADV_REMOVE madvise call or (2) an FALLOC_FL_PUNCH_HOLE fallocate call.
How severe is CVE-2014-4171?
Severity scoring for CVE-2014-4171 is pending analysis. The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.
How do I fix CVE-2014-4171?
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