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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.
Reserved 2023-07-25 | Published 2023-11-09 | Updated 2024-11-15 | Assigner redhat2023-06-28: | Reported to Red Hat. |
2023-08-17: | Made public. |
access.redhat.com/errata/RHSA-2024:2394 (RHSA-2024:2394)
access.redhat.com/errata/RHSA-2024:2950 (RHSA-2024:2950)
access.redhat.com/errata/RHSA-2024:3138 (RHSA-2024:3138)
access.redhat.com/security/cve/CVE-2023-39198
bugzilla.redhat.com/show_bug.cgi?id=2218332 (RHBZ#2218332)
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