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CVE-2018-1093

UnknownEPSS 2.00%

Last modified

CVE-2018-1093 is a vulnerability of currently unknown severity. The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.

Description

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.

Metrics

EPSS Probability
2.00%

78.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel<= 4.15.15

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-1093?
The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.
How severe is CVE-2018-1093?
Severity scoring for CVE-2018-1093 is pending analysis. The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.
How do I fix CVE-2018-1093?
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-2018-1093?

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

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Source: NVD / NIST