CVE-2019-19039

Sažetak

__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.

Reference

CVSS

Base:	1.9
Impact:	2.9
Exploitability:	3.4

Pristup

Vektor	Složenost	Autentikacija
LOCAL	MEDIUM	NONE

Impact

Povjerljivost	Cjelovitost	Dostupnost
PARTIAL	NONE	NONE

CVSS vektor

AV:L/AC:M/Au:N/C:P/I:N/A:N

Zadnje važnije ažuriranje

05-08-2024 - 02:15

Objavljeno

21-11-2019 - 02:15