CVE-2026-72278: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 2a359e072596fcb2e9e85017a865e3618a2fe5b5 преди ea7a76d7d614b5f82b4d0785f9af3550e860a71a; 2a359e072596fcb2e9e85017a865e3618a2fe5b5 преди 0a5dd8cf4d58ea28da132c2097cd1c525302ac48; 2a359e072596fcb2e9e85017a865e3618a2fe5b5 преди bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f
• Linux Linux: 6.16; преди 6.16; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-72278
• https://nvd.nist.gov/vuln/detail/CVE-2026-72278
• https://git.kernel.org/stable/c/ea7a76d7d614b5f82b4d0785f9af3550e860a71a
• https://git.kernel.org/stable/c/0a5dd8cf4d58ea28da132c2097cd1c525302ac48
• https://git.kernel.org/stable/c/bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f