CVE-2026-72277
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.
Affected versions
Linux kernel versions
6.16
and later are affected. Fixed in
6.18.40,
7.1.5,
7.2-rc4
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-72277?
CVE-2026-72277 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.40, 7.1.5 and 7.2-rc4. CVE-2026-72277 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-72277?
Yes. CVE-2026-72277 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2-rc4. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72277 actively exploited?
No. CVE-2026-72277 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.