Vulnerability CVE-2017-17863
Published: 2017-12-27

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.

Type:

CWE-190

 (Integer Overflow or Wraparound)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Linux -> Linux kernel 
Debian -> Debian linux 

 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
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