Bug 2400744 (CVE-2022-50448)

Summary: CVE-2022-50448 kernel: mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-10-01 12:04:59 UTC 
In the Linux kernel, the following vulnerability has been resolved:

mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in

When PTE_MARKER_UFFD_WP not configured, it's still possible to reach pte
marker code and trigger an warning. Add a few CONFIG_PTE_MARKER_UFFD_WP
ifdefs to make sure the code won't be reached when not compiled in.
Comment 1 Jon Moroney 2025-10-01 21:27:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100116-CVE-2022-50448-922e@gregkh/T