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CVE PROGRAM SOURCE RECORD9.0 Critical

CVE-2026-64106

KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits Userspace can restore an ITS Device Table Entry whose Size field encodes more EventID bits than the virtual ITS supports. The live MAPD path rejects that state, but vgic_its_restore_dte() accepts it and stores the out-of-range value in dev->num_eventid_bits. Reject restored DTEs with num_eventid_bits > VITS_TYPER_IDBITS before allocating the device. This mirrors the MAPD check and prevents the restored state from reaching vgic_its_restore_itt(), where the unchecked value can be converted into an oversized scan_its_table() range.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 57a9a117154c93539e33161dd318e6aeb8c04efa to < 1716b7fea2ead941a0dfac06c4504a3437cdf00daffected
  • 57a9a117154c93539e33161dd318e6aeb8c04efa to < dab9f93251b2c86a033de6098d0c73afddd55d4aaffected
  • 57a9a117154c93539e33161dd318e6aeb8c04efa to < b94538186a3eae3763b8f96dacd610920a865aa7affected
  • 57a9a117154c93539e33161dd318e6aeb8c04efa to < 0680f511926589206f81f57f76ce131d7741a316affected
  • 57a9a117154c93539e33161dd318e6aeb8c04efa to < 8bcd15b690a390241179516af1b6ae49ebfd9d95affected
  • 57a9a117154c93539e33161dd318e6aeb8c04efa to < 9ce754ed8e7ab4e3999767ce1505f85c449ccb07affected

Linux Linux

Default version status: affected

  • 4.12affected
  • 0 to < 4.12unaffected
  • 6.1.175 to ≤ 6.1.*unaffected
  • 6.6.142 to ≤ 6.6.*unaffected
  • 6.12.92 to ≤ 6.12.*unaffected
  • 6.18.34 to ≤ 6.18.*unaffected
  • 7.0.11 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References