7.5

CVE-2023-39198

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.

Data is provided by the National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 6.5
Linux ≫ Linux Kernel Version6.5 Updaterc1
Linux ≫ Linux Kernel Version6.5 Updaterc2
Linux ≫ Linux Kernel Version6.5 Updaterc3
Linux ≫ Linux Kernel Version6.5 Updaterc4
Linux ≫ Linux Kernel Version6.5 Updaterc5
Linux ≫ Linux Kernel Version6.5 Updaterc6
Fedoraproject ≫ Fedora Version38
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version9.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.01% 0.004
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 6.4 0.5 5.9
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
secalert@redhat.com 7.5 0.8 6
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://access.redhat.com/security/cve/CVE-2023-39198
Third Party Advisory
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2218332
Patch
Third Party Advisory
Issue Tracking