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ubuntucveUbuntu.comUB:CVE-2023-1192
HistoryNov 01, 2023 - 12:00 a.m.

CVE-2023-1192

2023-11-0100:00:00
ubuntu.com
ubuntu.com
13
cve-2023-1192
linux kernel
cifs
use-after-free
denial of service
sbeattie
ksmbd subsystem
samba
cifsd/ksmbd
memory region
data transfer

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

7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.2%

JSON

A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in
the Linux Kernel. After CIFS transfers response data to a system call,
there are still local variable points to the memory region, and if the
system call frees it faster than CIFS uses it, CIFS will access a free
memory region, leading to a denial of service.

Bugs

Notes

Author Note
sbeattie this affects the KSMBD subsystem, which generally should not be used, userspace samba is the safer choice. marking the introduction of the cifsd/ksmbd config option as the break commit possible duplicate of CVE-2022-48425? The fixing commit is the same for both CVEs. quite likely 98bea253aa28ad8be2ce565a9ca21beb4a9419e5 is not an accurate fix for this issue.
OSVersionArchitecturePackageVersionFilename
ubuntu22.04noarchlinux< 5.15.0-83.92UNKNOWN
ubuntu23.04noarchlinux< 6.2.0-34.34UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1044.49UNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1044.49~20.04.1UNKNOWN
ubuntu22.04noarchlinux-azure< 5.15.0-1046.53UNKNOWN
ubuntu20.04noarchlinux-azure-5.15< 5.15.0-1046.53~20.04.1UNKNOWN
ubuntu22.04noarchlinux-azure-fde< 5.15.0-1046.53.1UNKNOWN
ubuntu20.04noarchlinux-azure-fde-5.15< 5.15.0-1046.53~20.04.1.1UNKNOWN
ubuntu22.04noarchlinux-bluefield< anyUNKNOWN
ubuntu22.04noarchlinux-gcp< 5.15.0-1041.49UNKNOWN
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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

7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.2%

JSON
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