Linux Kernel ext4 Product Vulnerability Affecting Red Hat and Ubuntu
CVE-2018-1094

5.5MEDIUM

Key Information:

Vendor

Linux
Status
Linux Kernel Through Version 4.15
Vendor
CVE Published:
2 April 2018

What is CVE-2018-1094?

The ext4_fill_super function in the Linux kernel's ext4 module fails to consistently initialize the crc32c checksum driver. This oversight can be exploited by attackers using specially crafted ext4 images, leading to a NULL pointer dereference in ext4_xattr_inode_hash. The result is a denial of service condition, where the system may crash unexpectedly. This vulnerability primarily impacts Linux users, particularly in environments using Red Hat and Ubuntu distributions.

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Affected Version(s)

Linux kernel through version 4.15 Linux kernel through version 4.15

References

https://bugzilla.redhat.com/show_bug.cgi?id=1560788
x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:3083
vendor-advisoryx_refsource_REDHAT
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext...
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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