Use After Free in Linux Kernel
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.
Vulnerability class: Use-After-Free
EPSS: 0.004 (34.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel — versions 6.5
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-553.rt7.342.el8_10, 0:4.18.0-553.el8_10
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-427.13.1.el9_4
- Redhat Enterprise_linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry, Issue Tracking)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-39198?
- CVE-2023-39198 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.5/10. Published 2023-11-09.
- How severe is CVE-2023-39198?
- High severity. CVSS v3 base score is 7.5 out of 10.