CVE-2026-99287
NO FIX YET
Not triaged yet. The sources’ own description is below.
first public Nov 10, 2026 · 1 source
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In the Linux kernel, the following vulnerability has been resolved:
xen-netback: Zero out sring pointers on unmap
If xenvif_map_frontend_data_rings() fails when a ring is already mapped, it unmaps them via xenvif_unmap_frontend_data_rings() which keeps the ring pointers unchanged. xenvif_connect_data()'s cleanup path calls xenvif_disconnect_queue() which in turn calls xenvif_unmap_frontend_data_rings() again, which will attempt to unmap the pointers a second time.
Zero out the ring pointers after they are unmapped to avoid this issue.
This is XSA-532
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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