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CVE-2018-6551

UnknownEPSS 2.23%

Last modified

CVE-2018-6551 is a vulnerability of currently unknown severity. The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.. EPSS estimates a 2.23% chance of exploitation in the next 30 days.

Description

The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.

Metrics

EPSS Probability
2.23%

80.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GnuGlibc>= 2.24, <= 2.26

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-6551?
The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.
How severe is CVE-2018-6551?
Severity scoring for CVE-2018-6551 is pending analysis. The EPSS model estimates a 2.23% probability of exploitation in the next 30 days.
How do I fix CVE-2018-6551?
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.

Are you affected by CVE-2018-6551?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST