CVE-2026-64309: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Do not initialize SNP for ioctl(SNP_COMMIT) Sashiko notes: > if SEV initialization fails and KVM is actively running normal VMs, could a > userspace process trigger this code path via /dev/sev ioctls (e.g., > SEV_PDH_GEN) and zero out MSR_VM_HSAVE_PA globally? Would the next VMRUN > execution for an active VM trigger a general protection fault and crash the > host? The SNP_COMMIT command does not require the firmware to be in any particular state. Skip initializing it if it was previously uninitialized. The SEV-SNP firmware specification doc 56860 does not mention SNP_COMMIT in Table 5 as a command that is allowed in the UNINIT state, but it is in fact allowed and a future documentation update will reflect that.

Засегнати продукти

• Linux Linux: 1c3506ea8599a3ad1b9aae5cbd573134f8d18db7 преди 74768f73854d647a6462f252dc8782ab8a835211; ceac7fb89e8da465aec3ac3c20477f912f5c3a6c преди 7a361c74bb12f3398c388905f1d325be642cd36e; ceac7fb89e8da465aec3ac3c20477f912f5c3a6c преди 67ed191b4c8bdf432a3f32d1eb302880b4795cd1; ceac7fb89e8da465aec3ac3c20477f912f5c3a6c преди 5a1364da2f04217a36e2fdfa2db4ee025b383a20; 6.12.75 преди 6.12.96
• Linux Linux: 6.16; преди 6.16; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 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-2026-64309
• https://nvd.nist.gov/vuln/detail/CVE-2026-64309
• https://git.kernel.org/stable/c/74768f73854d647a6462f252dc8782ab8a835211
• https://git.kernel.org/stable/c/7a361c74bb12f3398c388905f1d325be642cd36e
• https://git.kernel.org/stable/c/67ed191b4c8bdf432a3f32d1eb302880b4795cd1
• https://git.kernel.org/stable/c/5a1364da2f04217a36e2fdfa2db4ee025b383a20