CVE-2017-5669

Advisory lineage Upstream: 0 Downstream: 13
Modified
Published: 24 Feb 2017, 15:00
Last modified:05 Aug 2024, 15:11

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability -0.02%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Feb 2017, 15:00
Published
Vulnerability first disclosed
05 Aug 2024, 15:11
Last Modified
Vulnerability information updated

Description

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.03%• Percentile: 9%

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04

  • debian•debian_linux

    8.0

  • linux•linux_kernel

    < 4.11

References (8)