Id:
CVE-2019-19039
Comment
:
__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.
CVSSv2 Score:
1.9
Access vector:
|
LOCAL
|
Access complexity:
|
MEDIUM
|
Authentication:
|
NONE
|
Confidentiality impact:
|
PARTIAL
|
Integrity impact:
|
NONE
|
Availability impact:
|
NONE
|
CVSSv2 Vector:
AV:L/AC:M/Au:N/C:P/I:N/A:N
CVSSv3 Score:
5.5
Attack vector:
|
LOCAL
|
Attack complexity:
|
LOW
|
Privileges required:
|
NONE
|
User interaction:
|
REQUIRED
|
Scope:
|
UNCHANGED
|
Confidentiality impact:
|
HIGH
|
Integrity impact:
|
NONE
|
Availability impact:
|
NONE
|
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References: