CVE-2017-18257

Aliases:DEBIAN-CVE-2017-18257
Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 04 Apr 2018, 17:00
Last modified:05 Aug 2024, 21:13

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.0 (nvd)
EPSS Score
0.38% LOW
0% probability +0.27%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Apr 2018, 17:00
Published
Vulnerability first disclosed
05 Aug 2024, 21:13
Last Modified
Vulnerability information updated

Description

The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system calls with an FS_IOC_FIEMAP ioctl.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.38%• Percentile: 32%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • debian•linux

    < 4.11.6-1 | < 4.11.6-1 | < 4.11.6-1 | < 4.11.6-1

  • debian•debian_linux

    9.0

  • linux•linux_kernel

    < 4.11

References (6)