CVE-2017-17863 Information

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.

CVSS Vector

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

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8