CVE-2018-1095

Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 02 Apr 2018, 03:00
Last modified:05 Aug 2024, 03:51

Vulnerability Summary

Overall Risk (default)
medium
38/100
CVSS Score
7.1 HIGH
v2.0 (nvd)
EPSS Score
0.15% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

02 Apr 2018, 03:00
Published
Vulnerability first disclosed
05 Aug 2024, 03:51
Last Modified
Vulnerability information updated

Description

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

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•HIGH•Score: 7.1AV:N/AC:M/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.15%• Percentile: 36%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

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

Affected Systems

  • linux•linux_kernel

    ≤ 4.15.15

References (7)