CVE-2019-19039

Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 21 Nov 2019, 01:40
Last modified:05 Aug 2024, 02:09

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.43% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

21 Nov 2019, 01:40
Published
Vulnerability first disclosed
05 Aug 2024, 02:09
Last Modified
Vulnerability information updated

Description

__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 Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  • v2.0•LOW•Score: 1.9AV:L/AC:M/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.43%• Percentile: 63%

Techniques & Countermeasures

  • CWE-532•Insertion of Sensitive Information into Log File

    The product writes sensitive information to a log file.

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04 | 18.04

  • debian•debian_linux

    9.0

  • linux•linux_kernel

    ≤ 5.3.12

References (3)