CVE-2026-72278KVM: arm64: nv: Re-translate VNCR before injecting abort
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Re-translate VNCR before injecting abort KVM faults in the VNCR page with FOLL_WRITE whenever the guest aborts for a write, similar to how a regular stage-2 mapping is handled. It is entirely possible that the guest reads from the VNCR before writing to it, in which case the PFN could only be read-only. Invalidate the VNCR TLB and re-fetch the translation upon taking a VNCR abort, allowing the host mapping to be faulted in for write the second time around. Interestingly enough, this also satisfies the ordering requirements of FEAT_ETS2/3 between descriptor updates and MMU faults.
- CVSS
- 9.3 CRITICAL (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 2a359e072596fcb2e9e85017a865e3618a2fe5b5 before ea7a76d7d614b5f82b4d0785f9af3550e860a71a; 2a359e072596fcb2e9e85017a865e3618a2fe5b5 builds before 0a5dd8cf4d58ea28da132c2097cd1c525302ac48; from 2a359e072596fcb2e9e85017a865e3618a2fe5b5 before bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f | CNA record |
References
- https://git.kernel.org/stable/c/ea7a76d7d614b5f82b4d0785f9af3550e860a71a
- https://git.kernel.org/stable/c/0a5dd8cf4d58ea28da132c2097cd1c525302ac48
- https://git.kernel.org/stable/c/bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.