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CVE-2018-1094

MEDIUM
5.5
CVSS Score
Published: April 2, 2018 at 03:00 AM UTC
Updated: June 17, 2026 at 01:50 AM UTC
6 products affected across 3 vendorsLinux KernelUbuntu LinuxEnterprise Linux Desktop

Using Linux kernel through version 4.15 by N/A?

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Severity
MEDIUM5.5
Exploit prediction
EPSS 2%

Description

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (10)

x_refsource_MISCMailing ListThird Party Advisory
Source: [email protected]
http://openwall.com/lists/oss-security/2018/03/29/1
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:2948
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3083
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3096
x_refsource_MISCExploitIssue Tracking
Source: [email protected]
https://bugzilla.kernel.org/show_bug.cgi?id=199183
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1560788
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957
x_refsource_MISCPatch
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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