PT-2018-1241 · Linux+5 · Linux Kernel+5

Wen Xu · Published 2018-03-29 · Updated 2023-02-13 · CVE-2018-1094

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 4.15.15

Description The issue is related to the ext4 fill super function in the Linux kernel, which does not always initialize the crc32c checksum driver. This allows attackers to cause a denial of service via a crafted ext4 image, resulting in a system crash due to a NULL pointer dereference in ext4 xattr inode hash.

Recommendations For Linux kernel versions through 4.15.15, update to a version that initializes the crc32c checksum driver properly to prevent the denial of service. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2018-1557

ALT-PU-2018-1621

ALT-PU-2019-1433

BDU:2018-00714

CESA-2018_3083

CVE-2018-1094

MGASA-2018-0249

MGASA-2018-0264

MGASA-2018-0265

OPENSUSE-SU-2018_1773-1

OPENSUSE-SU-2018_2119-1

RHSA-2018:2948

RHSA-2018:3083

RHSA-2018:3096

RHSA-2018_3083

RHSA-2018_3096

SUSE-SU-2018:1761-1

SUSE-SU-2018:1762-1

SUSE-SU-2018:1816-1

SUSE-SU-2018:1855-1

SUSE-SU-2018:1855-2

SUSE-SU-2018:2092-1

USN-3695-1

USN-3695-2

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 471

• 🔥 https://bugzilla.kernel.org/show_bug.cgi?id=199183 · Exploit
• https://osv.dev/vulnerability/USN-3695-2 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2018-0265.html · Security Note
• https://ubuntu.com/security/notices/USN-3695-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1094 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1 · Patch
• https://cve.org/CVERecord?id=CVE-2018-1094 · Security Note
• https://osv.dev/vulnerability/USN-3695-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1816-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0249 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0265 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-1094 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2018-1094 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0264 · Vendor Advisory
• https://usn.ubuntu.com/3695-1 · Vendor Advisory