UBUNTU-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.
02 / AFFECTED SOFTWARE
Affected packages
78 explicit affected versions
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1 explicit affected versions
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37 explicit affected versions
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1 explicit affected versions
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29 explicit affected versions
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29 explicit affected versions
11 explicit affected versions
36 explicit affected versions
5 explicit affected versions
10 explicit affected versions
121 explicit affected versions
4 explicit affected versions
1 explicit affected versions
34 explicit affected versions
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77 explicit affected versions
119 explicit affected versions
10 explicit affected versions
8 explicit affected versions
88 explicit affected versions
12 explicit affected versions
4 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://access.redhat.com/security/cve/CVE-2023-39198
- https://git.kernel.org/linus/c611589b4259ed63b9b77be6872b1ce07ec0ac16
- https://ubuntu.com/security/CVE-2023-39198
- https://ubuntu.com/security/notices/USN-6534-1
- https://ubuntu.com/security/notices/USN-6534-2
- https://ubuntu.com/security/notices/USN-6534-3
- https://ubuntu.com/security/notices/USN-6549-1
- https://ubuntu.com/security/notices/USN-6549-2
- https://ubuntu.com/security/notices/USN-6549-3
- https://ubuntu.com/security/notices/USN-6549-4
- https://ubuntu.com/security/notices/USN-6549-5
- https://www.cve.org/CVERecord?id=CVE-2023-39198