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ubuntucveUbuntu.comUB:CVE-2023-2236
HistoryMay 01, 2023 - 12:00 a.m.

CVE-2023-2236

2023-05-0100:00:00
ubuntu.com
ubuntu.com
17
linux kernel
io_uring subsystem
local privilege escalation

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

9.1%

JSON

A use-after-free vulnerability in the Linux Kernel io_uring subsystem can
be exploited to achieve local privilege escalation. Both
io_install_fixed_file and its callers call fput in a file in case of an
error, causing a reference underflow which leads to a use-after-free
vulnerability. We recommend upgrading past commit
9d94c04c0db024922e886c9fd429659f22f48ea4.

Notes

Author Note
sbeattie appears to be a duplicate of CVE-2023-0469
OSVersionArchitecturePackageVersionFilename
ubuntu22.10noarchlinux< 5.19.0-38.39UNKNOWN
ubuntu22.10noarchlinux-aws< 5.19.0-1022.23UNKNOWN
ubuntu22.10noarchlinux-azure< 5.19.0-1022.23UNKNOWN
ubuntu22.10noarchlinux-gcp< 5.19.0-1019.21UNKNOWN
ubuntu22.04noarchlinux-hwe-5.19< 5.19.0-38.39~22.04.1UNKNOWN
ubuntu22.10noarchlinux-ibm< 5.19.0-1019.21UNKNOWN
ubuntu22.10noarchlinux-kvm< 5.19.0-1020.21UNKNOWN
ubuntu22.10noarchlinux-lowlatency< 5.19.0-1021.22UNKNOWN
ubuntu22.04noarchlinux-lowlatency-hwe-5.19< 5.19.0-1021.22~22.04.1UNKNOWN
ubuntu22.04noarchlinux-oem-6.0< 6.0.0-1012.12UNKNOWN
Rows per page:
1-10 of 141

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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

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Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

9.1%

JSON
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