CVE-2026-72278
- Source
- https://cve.org/CVERecord?id=CVE-2026-72278
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72278.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-72278
- Downstream
- Published
- 2026-08-15T05:54:59.698Z
- Modified
- 2026-08-16T03:48:39.344917410Z
- Summary
- KVM: arm64: nv: Re-translate VNCR before injecting abort
- Details
-
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.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72278.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/0a5dd8cf4d58ea28da132c2097cd1c525302ac48
- https://git.kernel.org/stable/c/bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f
- https://git.kernel.org/stable/c/ea7a76d7d614b5f82b4d0785f9af3550e860a71a
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72278.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-72278
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git