CVE-2016-9793

Advisory lineage Upstream: 0 Downstream: 22
Modified
Published: 28 Dec 2016, 07:42
Last modified:06 Aug 2024, 02:59

Vulnerability Summary

Overall Risk (default)
medium
42/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
2.97% LOW
3% probability +0.21%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

28 Dec 2016, 07:42
Published
Vulnerability first disclosed
06 Aug 2024, 02:59
Last Modified
Vulnerability information updated

Description

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option.

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: 2.97%• Percentile: 87%

Techniques & Countermeasures

  • CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

    The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Affected Systems

  • linux•linux_kernel

    ≥ 3.5, < 3.12.69 | ≥ 3.13, < 3.16.40 | ≥ 3.17, < 3.18.52 | ≥ 3.19, < 4.1.50 | ≥ 4.2, < 4.4.38 | ≥ 4.5, < 4.8.14

References (12)