CVE-2023-1872

2023-04-1200:00:00

ubuntu.com

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

3.5 Low

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:H/Au:S/C:P/I:P/A:P

0.0004 Low

EPSS

Percentile

5.3%

JSON

A use-after-free vulnerability in the Linux Kernel io_uring system can be
exploited to achieve local privilege escalation. The io_file_get_fixed
function lacks the presence of ctx->uring_lock which can lead to a
Use-After-Free vulnerability due a race condition with fixed files getting
unregistered. We recommend upgrading past commit
da24142b1ef9fd5d36b76e36bab328a5b27523e8.

OSVersionArchitecturePackageVersionFilename
ubuntu22.04noarchlinux< 5.15.0-71.78UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1035.39UNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1035.39~20.04.1UNKNOWN
ubuntu22.04noarchlinux-azure< 5.15.0-1037.44UNKNOWN
ubuntu20.04noarchlinux-azure-5.15< 5.15.0-1037.44~20.04.1UNKNOWN
ubuntu22.04noarchlinux-azure-fde< 5.15.0-1037.44.1UNKNOWN
ubuntu20.04noarchlinux-azure-fde-5.15< 5.15.0-1037.44~20.04.1.1UNKNOWN
ubuntu22.04noarchlinux-bluefield< anyUNKNOWN
ubuntu22.04noarchlinux-gcp< anyUNKNOWN
ubuntu20.04noarchlinux-gcp-5.15< 5.15.0-1033.41~20.04.1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	22.04	noarch	linux	< 5.15.0-71.78	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1035.39	UNKNOWN
ubuntu	20.04	noarch	linux-aws-5.15	< 5.15.0-1035.39~20.04.1	UNKNOWN
ubuntu	22.04	noarch	linux-azure	< 5.15.0-1037.44	UNKNOWN
ubuntu	20.04	noarch	linux-azure-5.15	< 5.15.0-1037.44~20.04.1	UNKNOWN
ubuntu	22.04	noarch	linux-azure-fde	< 5.15.0-1037.44.1	UNKNOWN
ubuntu	20.04	noarch	linux-azure-fde-5.15	< 5.15.0-1037.44~20.04.1.1	UNKNOWN
ubuntu	22.04	noarch	linux-bluefield	< any	UNKNOWN
ubuntu	22.04	noarch	linux-gcp	< any	UNKNOWN
ubuntu	20.04	noarch	linux-gcp-5.15	< 5.15.0-1033.41~20.04.1	UNKNOWN