PT-2018-3798 · Linux+5 · Linux Kernel+5

Wen Xu · Published 2018-06-21 · Updated 2021-04-13 · CVE-2018-13095

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 4.17.3

Description An issue in the Linux kernel can cause a denial of service, resulting in memory corruption and a BUG, when encountering a corrupted xfs image with an inode in extent format that has more extents than fit in the inode fork. The vulnerability is related to a buffer overflow in memory, which can be exploited to cause a denial of service.

Recommendations For Linux kernel versions through 4.17.3, update to a version later than 4.17.3 to resolve the issue. As a temporary workaround, consider restricting access to corrupted xfs images to minimize the risk of exploitation.

Fix

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2018-1971

ALT-PU-2018-1976

ALT-PU-2019-1433

BDU:2022-03968

CESA-2019_2029

CVE-2018-13095

OPENSUSE-SU-2018_2738-1

OPENSUSE-SU-2018_3071-1

RHSA-2019:1350

RHSA-2019:2029

RHSA-2019:2043

RHSA-2019_2029

RHSA-2019_2043

SUSE-SU-2018:2775-1

SUSE-SU-2018:2776-1

SUSE-SU-2018:2858-1

SUSE-SU-2018:2862-1

SUSE-SU-2018:2980-1

SUSE-SU-2018:2981-1

SUSE-SU-2018:3084-1

SUSE-SU-2018:3961-1

USN-4904-1

USN-4907-1

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 500

• https://github.com/torvalds/linux/commit/23fcb3340d033d9f081e21e6c12c2db7eaa541d3 · Patch
• https://ubuntu.com/security/notices/USN-4904-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-13095 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-13095 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2858-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-03968 · Security Note
• https://linux.oracle.com/errata/ELSA-2019-2029.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-16232 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3347 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-13095 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2019:2029 · Vendor Advisory
• https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=23fcb3340d033d9f081e21e6c12c2db7eaa541d3 · Patch
• https://access.redhat.com/errata/RHSA-2019:2043 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2776-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2981-1 · Vendor Advisory