PT-2017-15054 · Linux+2 · Linux Kernel+2

Jann Horn · Published 2017-03-17 · Updated 2018-03-16 · CVE-2017-17863

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions 4.9.x through 4.9.71

Description The issue is related to the Linux kernel's BPF verifier, which fails to check the relationship between pointer values and the BPF stack. This can be exploited by local users to cause a denial of service, resulting in an integer overflow or invalid memory access, and potentially having other unspecified impacts.

Recommendations For Linux kernel versions 4.9.x through 4.9.71, update to a version that includes the fix for this issue.

Fix

DoS

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2017-1299

ALT-PU-2017-2832

CVE-2017-17863

DSA-4073-1

MGASA-2018-0062

MGASA-2018-0063

MGASA-2018-0064

USN-3523-1

USN-3523-2

USN-3523-3

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 49

• https://security-tracker.debian.org/tracker/CVE-2017-17863 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4073-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-17862 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-17863 · Security Note
• 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 · Patch
• https://debian.org/security/2017/dsa-4073 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-16995 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3523-3 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3523-2 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2018-0062.html · Security Note
• https://osv.dev/vulnerability/CVE-2017-17863 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-17863 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0064 · Vendor Advisory
• https://spinics.net/lists/stable/msg206985.html · Patch
• https://ubuntu.com/security/notices/USN-3523-2 · Vendor Advisory