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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2023-39198
HistoryNov 09, 2023 - 8:15 p.m.

CVE-2023-39198

2023-11-0920:15:08
Debian Security Bug Tracker
security-tracker.debian.org
19
cve-2023-39198
qxl driver
linux kernel
race condition
use-after-free
denial of service
privilege escalation
unix

7.5 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

5.1%

A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.

7.5 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

5.1%