CVE-2016-8655

Advisory lineage Upstream: 0 Downstream: 38
Modified
Published: 08 Dec 2016, 08:08
Last modified:06 Aug 2024, 02:27

Vulnerability Summary

Overall Risk (default)
high
51/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
47.36% HIGH
47% probability +16.99%
KEV
Not listed
Ransomware
No reports
Public exploits
4 found
Dark Web
Not detected

Timeline

08 Dec 2016, 08:08
Published
Vulnerability first disclosed
06 Aug 2024, 02:27
Last Modified
Vulnerability information updated

Description

Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAP_NET_RAW capability to change a socket version, related to the packet_set_ring and packet_setsockopt functions.

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: 47.36%• Percentile: 98%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

  • 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 16.10

  • linux•linux_kernel

    ≥ 3.2, < 3.2.85 | ≥ 3.3, < 3.10.106 | ≥ 3.11, < 3.12.69 | ≥ 3.13, < 3.16.40 | ≥ 3.17, < 3.18.46 | ≥ 3.19, < 4.1.37 | ≥ 4.2, < 4.4.38 | ≥ 4.5, < 4.8.14

References (34)