CVE-2017-11176

Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 11 Jul 2017, 23:00
Last modified:05 Aug 2024, 17:57

Vulnerability Summary

Overall Risk (default)
medium
45/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
20.81% HIGH
21% probability +4.31%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

11 Jul 2017, 23:00
Published
Vulnerability first disclosed
05 Aug 2024, 17:57
Last Modified
Vulnerability information updated

Description

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

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•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 20.81%• Percentile: 96%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    8.0 | 9.0

  • linux•linux_kernel

    < 3.2.92 | ≥ 3.3, < 3.16.47 | ≥ 3.17, < 3.18.61 | ≥ 3.19, < 4.1.43 | ≥ 4.2, < 4.4.77 | ≥ 4.5, < 4.9.38 | ≥ 4.10, < 4.11.11 | ≥ 4.12, < 4.12.2

References (12)