CVE-2018-13093

Aliases:UBUNTU-CVE-2018-13093DEBIAN-CVE-2018-13093
Advisory lineage Upstream: 0 Downstream: 21
Modified
Published: 03 Jul 2018, 05:00
Last modified:05 Aug 2024, 08:52

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.0 (nvd)
EPSS Score
1.73% LOW
2% probability +1.59%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Jul 2018, 05:00
Published
Vulnerability first disclosed
05 Aug 2024, 08:52
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 1.73%• Percentile: 76%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•linux

    < 4.17.14-1 | < 4.17.14-1 | < 4.17.14-1 | < 4.17.14-1

  • ubuntu•linux

    all | < 4.4.0-201.233 | < 4.15.0-58.64

  • ubuntu•linux-aws

    < 4.4.0-1085.89 | < 4.4.0-1121.135 | < 4.15.0-1047.49

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1047.49~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1059.64~14.04.1 | < 4.15.0-1055.60 | < 4.18.0-1011.11~18.04.1

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.4.0-1055.61 | all

  • ubuntu•linux-gcp

    < 4.15.0-1040.42~16.04.1 | < 4.15.0-1040.42

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1040.42

  • ubuntu•linux-hwe

    < 4.15.0-58.64~16.04.1

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1087.96 | < 4.15.0-1042.42

  • ubuntu•linux-lts-xenial

    < 4.4.0-201.233~14.04.1

  • ubuntu•linux-oem

    < 4.15.0-1050.57

  • ubuntu•linux-oracle

    < 4.15.0-1021.23~16.04.1 | < 4.15.0-1021.23

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1145.155 | < 4.15.0-1043.46

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.4.0-1149.159 | < 4.15.0-1060.66

  • linux•linux_kernel

    ≤ 4.17.3

References (15)