CVE-2017-17863

HIGH

Description

kernel/bpf/verifier.c in the Linux kernel 4.9.x through 4.9.71 does not check the relationship between pointer values and the BPF stack, which allows local users to cause a denial of service (integer overflow or invalid memory access) or possibly have unspecified other impact.

References

http://www.securityfocus.com/bid/102321

http://www.securitytracker.com/id/1040058

https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-reject-out-of-bounds-stack-pointer-calculation.patch?h=stretch-security

https://usn.ubuntu.com/3523-3/

https://usn.ubuntu.com/usn/usn-3523-2/

https://www.debian.org/security/2017/dsa-4073

https://www.spinics.net/lists/stable/msg206985.html

Details

Source: MITRE

Published: 2017-12-27

Updated: 2018-03-16

Type: CWE-190

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C)

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH