CVE-2023-4389

2023-08-1600:00:00

ubuntu.com

btrfs filesystem

system crash

kernel information

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS

Percentile

5.1%

JSON

A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs
filesystem in the Linux Kernel due to a double decrement of the reference
count. This issue may allow a local attacker with user privilege to crash
the system or may lead to leaked internal kernel information.

Bugs

OSVersionArchitecturePackageVersionFilename
ubuntu22.04noarchlinux< 5.15.0-35.36UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1009.11UNKNOWN
ubuntu22.04noarchlinux-azure< 5.15.0-1008.9UNKNOWN
ubuntu20.04noarchlinux-azure-5.15< 5.15.0-1008.9~20.04.1UNKNOWN
ubuntu22.04noarchlinux-gcp< 5.15.0-1006.9UNKNOWN
ubuntu22.04noarchlinux-gke< 5.15.0-1006.7UNKNOWN
ubuntu20.04noarchlinux-hwe-5.15< 5.15.0-41.44~20.04.1UNKNOWN
ubuntu22.04noarchlinux-ibm< 5.15.0-1005.5UNKNOWN
ubuntu22.04noarchlinux-intel-iotg< 5.15.0-1008.11UNKNOWN
ubuntu20.04noarchlinux-intel-iotg-5.15< 5.15.0-1008.11~20.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	22.04	noarch	linux	< 5.15.0-35.36	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1009.11	UNKNOWN
ubuntu	22.04	noarch	linux-azure	< 5.15.0-1008.9	UNKNOWN
ubuntu	20.04	noarch	linux-azure-5.15	< 5.15.0-1008.9~20.04.1	UNKNOWN
ubuntu	22.04	noarch	linux-gcp	< 5.15.0-1006.9	UNKNOWN
ubuntu	22.04	noarch	linux-gke	< 5.15.0-1006.7	UNKNOWN
ubuntu	20.04	noarch	linux-hwe-5.15	< 5.15.0-41.44~20.04.1	UNKNOWN
ubuntu	22.04	noarch	linux-ibm	< 5.15.0-1005.5	UNKNOWN
ubuntu	22.04	noarch	linux-intel-iotg	< 5.15.0-1008.11	UNKNOWN
ubuntu	20.04	noarch	linux-intel-iotg-5.15	< 5.15.0-1008.11~20.04.1	UNKNOWN