CVE-2017-17864 log

Source
Severity Medium
Remote No
Type Information disclosure
Description 
It has been discovered that kernel/bpf/verifier.c in the Linux kernel before 4.14.9 and 4.9.73 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."
Group Package Affected Fixed Severity Status Ticket
AVG-574 linux-hardened 4.14.7.a-1 4.14.11.a-1 High Fixed FS#56832
AVG-571 linux-zen 4.14.7-1 4.14.11-1 High Fixed FS#56832
AVG-561 linux-lts 4.9.68-1 4.9.74-1 High Fixed
AVG-552 linux 4.14.7-1 4.14.11-1 High Fixed FS#56832
Date Advisory Group Package Severity Type
05 Jan 2018 ASA-201801-4 AVG-574 linux-hardened High multiple issues
05 Jan 2018 ASA-201801-3 AVG-571 linux-zen High multiple issues
05 Jan 2018 ASA-201801-2 AVG-561 linux-lts High multiple issues
05 Jan 2018 ASA-201801-1 AVG-552 linux High multiple issues
References 
https://bugs.chromium.org/p/project-zero/issues/detail?id=1454
http://www.openwall.com/lists/oss-security/2017/12/21/2
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=37435f7e80ef9adc32a69013c18f135e3f434244
Notes 
Workaround by disabling unprivileged bpf:
sysctl -w kernel.unprivileged_bpf_disabled=1