CVE-2018-13093

MEDIUM

Description

An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during allocation.

References

https://access.redhat.com/errata/RHSA-2019:2029

https://access.redhat.com/errata/RHSA-2019:2043

https://bugzilla.kernel.org/show_bug.cgi?id=199367

https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=afca6c5b2595fc44383919fba740c194b0b76aff

https://github.com/torvalds/linux/commit/afca6c5b2595fc44383919fba740c194b0b76aff

https://usn.ubuntu.com/4094-1/

https://usn.ubuntu.com/4118-1/

Details

Source: MITRE

Published: 2018-07-03

Updated: 2019-08-06

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.17.3 (inclusive)

Tenable Plugins

View all (27 total)

IDNameProductFamilySeverity
145516Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4709-1)NessusUbuntu Local Security Checks
high
145510Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4708-1)NessusUbuntu Local Security Checks
high
137516EulerOS 2.0 SP2 : kernel (EulerOS-SA-2020-1674)NessusHuawei Local Security Checks
critical
134240Debian DLA-2114-1 : linux-4.9 security updateNessusDebian Local Security Checks
critical
128651CentOS 7 : kernel (CESA-2019:2029)NessusCentOS Local Security Checks
high
128478Ubuntu 16.04 LTS / 18.04 LTS : linux-aws vulnerabilities (USN-4118-1)NessusUbuntu Local Security Checks
critical
128226Scientific Linux Security Update : kernel on SL7.x x86_64 (20190806)NessusScientific Linux Local Security Checks
high
127889Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4094-1)NessusUbuntu Local Security Checks
high
127655RHEL 7 : kernel-rt (RHSA-2019:2043)NessusRed Hat Local Security Checks
high
127650RHEL 7 : kernel (RHSA-2019:2029)NessusRed Hat Local Security Checks
high
124974EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1521)NessusHuawei Local Security Checks
critical
124833EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1511)NessusHuawei Local Security Checks
high
123909EulerOS Virtualization 2.5.4 : kernel (EulerOS-SA-2019-1223)NessusHuawei Local Security Checks
medium
123906EulerOS Virtualization 2.5.3 : kernel (EulerOS-SA-2019-1220)NessusHuawei Local Security Checks
medium
123329openSUSE Security Update : the Linux Kernel (openSUSE-2019-769)NessusSuSE Local Security Checks
high
120418Fedora 28 : kernel (2018-50075276e8)NessusFedora Local Security Checks
high
120118SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2018:2980-1)NessusSuSE Local Security Checks
high
118034SUSE SLES12 Security Update : kernel (SUSE-SU-2018:3084-1)NessusSuSE Local Security Checks
high
118033SUSE SLES12 Security Update : kernel (SUSE-SU-2018:3083-1)NessusSuSE Local Security Checks
high
117988openSUSE Security Update : the Linux Kernel (openSUSE-2018-1140)NessusSuSE Local Security Checks
high
117824SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2908-1)NessusSuSE Local Security Checks
high
117800SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2858-1)NessusSuSE Local Security Checks
high
117629SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:2776-1)NessusSuSE Local Security Checks
high
117523openSUSE Security Update : the Linux Kernel (openSUSE-2018-1016)NessusSuSE Local Security Checks
high
111552Amazon Linux AMI : kernel (ALAS-2018-1048)NessusAmazon Linux Local Security Checks
medium
111551Amazon Linux 2 : kernel (ALAS-2018-1051)NessusAmazon Linux Local Security Checks
medium
111243Fedora 27 : kernel (2018-8484550fff)NessusFedora Local Security Checks
high