Riskcovery

CVE-2026-72277

KVM: arm64: nv: Inject SEA if guest VNCR isn't normal memory

State
Published
Severity
9.3 Critical
Published
Aug 15, 2026
Updated
Aug 17, 2026
Reserved
Aug 9, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Inject SEA if guest VNCR isn't normal memory

When constructing an L1 VNCR mapping, KVM unconditionally uses cacheable memory attributes, even if the underlying PFN isn't memory. This gets particularly hairy if the endpoint doesn't support cacheable memory attributes, potentially throwing an SError on writeback...

While KVM does permit cacheable memory attributes on certain PFNMAP VMAs, kvm_translate_vncr() isn't currently grabbing the VMA. So do the simpler thing for now and just reject everything that isn't memory.

Scores

CVSSScoreVectorSource
3.19.3 CriticalCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2a359e072596fcb2e9e85017a865e3618a2fe5b5 to before d5436e18e4fc2886ac306304d884ea3b92e1edbfAffected
  • 2a359e072596fcb2e9e85017a865e3618a2fe5b5 to before bc00e0e376ee3572f5d26c174473abef1e35deccAffected
  • 2a359e072596fcb2e9e85017a865e3618a2fe5b5 to before 4bd7dbe0b2243e6aa735cae4d5e1ff988b30b2a6Affected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.18.40 through 6.18.*Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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