Information Exposure Affecting bpftool package, versions *


Severity

Recommended
low

Based on CentOS security rating.

Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-CENTOS8-BPFTOOL-1946357
  • published26 Jul 2021
  • disclosed20 Nov 2019

Introduced: 20 Nov 2019

CVE-2019-19039  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

There is no fixed version for Centos:8 bpftool.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which clearly is not the case.

CVSS Scores

version 3.1