CVE-2026-89931: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit Always check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a nested VM-Exit to ensure the request is cleared, even when KVM was built with CONFIG_KVM_HYPERV=n, as KVM subtly relies on the "check" to clear the flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM manages to bail from VM-Enter without processing the request, and then emulates VMLAUNCH or VMRESUME.

Засегнати продукти

• Linux Linux: b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 преди ae190f2439ca30067927077bf570d4c5edf07a0f; b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 преди 674a3244f07f323f21a106a7bdcaebb6db6a5058; b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 преди bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5; b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 преди 11722439fb206c88e6f31be54173efa9880b4ccb
• Linux Linux: 6.8; преди 6.8; 6.12.110 до 6.12.*; 6.18.51 до 6.18.*; 7.2.5 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89931
• https://nvd.nist.gov/vuln/detail/CVE-2026-89931
• https://git.kernel.org/stable/c/ae190f2439ca30067927077bf570d4c5edf07a0f
• https://git.kernel.org/stable/c/674a3244f07f323f21a106a7bdcaebb6db6a5058
• https://git.kernel.org/stable/c/bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5
• https://git.kernel.org/stable/c/11722439fb206c88e6f31be54173efa9880b4ccb