[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2026-23401":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T14:53:31.930Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":17,"related":18,"reserved_at":9,"published_at":19,"modified_at":20,"state":9,"summary":21,"references_raw":23,"kevs":30,"epss":9,"epss_history":31,"metrics":32,"affected":39},"DEBIAN-CVE-2026-23401","In the Linux kernel, the following vulnerability has been resolved:  KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE  When installing an emulated MMIO SPTE, do so *after* dropping/zapping the existing SPTE (if it's shadow-present).  While commit a54aa15c6bda3 was right about it being impossible to convert a shadow-present SPTE to an MMIO SPTE due to a _guest_ write, it failed to account for writes to guest memory that are outside the scope of KVM.  E.g. if host userspace modifies a shadowed gPTE to switch from a memslot to emulted MMIO and then the guest hits a relevant page fault, KVM will install the MMIO SPTE without first zapping the shadow-present SPTE.    ------------[ cut here ]------------   is_shadow_present_pte(*sptep)   WARNING: arch/x86/kvm/mmu/mmu.c:484 at mark_mmio_spte+0xb2/0xc0 [kvm], CPU#0: vmx_ept_stale_r/4292   Modules linked in: kvm_intel kvm irqbypass   CPU: 0 UID: 1000 PID: 4292 Comm: vmx_ept_stale_r Not tainted 7.0.0-rc2-eafebd2d2ab0-sink-vm #319 PREEMPT   Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015   RIP: 0010:mark_mmio_spte+0xb2/0xc0 [kvm]   Call Trace:    \u003CTASK>    mmu_set_spte+0x237/0x440 [kvm]    ept_page_fault+0x535/0x7f0 [kvm]    kvm_mmu_do_page_fault+0xee/0x1f0 [kvm]    kvm_mmu_page_fault+0x8d/0x620 [kvm]    vmx_handle_exit+0x18c/0x5a0 [kvm_intel]    kvm_arch_vcpu_ioctl_run+0xc55/0x1c20 [kvm]    kvm_vcpu_ioctl+0x2d5/0x980 [kvm]    __x64_sys_ioctl+0x8a/0xd0    do_syscall_64+0xb5/0x730    entry_SYSCALL_64_after_hwframe+0x4b/0x53   RIP: 0033:0x47fa3f    \u003C/TASK>   ---[ end trace 0000000000000000 ]---",null,[],[],[],[14],{"_key":15},"CVE-2026-23401",[],[],[],"2026-04-01T09:16:15.260Z","2026-05-02T10:04:04.900975Z",{"cisa_kev":22,"cisa_ransomware":22,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[24],{"url":25,"sources":26,"tags":28},"https://security-tracker.debian.org/tracker/CVE-2026-23401",[27],"osv_debian",[29],"Advisory",[],[],[33],{"source":27,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":34,"cvss_v4_0":9},{"baseScore":35,"baseSeverity":9,"vectorString":36,"impactScore":37,"exploitabilityScore":38},5.5,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",6,4.6,[40,62],{"ecosystem":41,"name":42,"vendor":43,"product":42,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":42,"source":9,"versions":45},"Debian","linux","debian","deb",[46,50,51,52,56,59],{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"all",true,"ecosystem",{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":53,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":54,"version_end_type":55,"fixed_in":9},"lt6_1_170_1","6.1.170-1","excluding",{"version":57,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":58,"version_end_type":55,"fixed_in":9},"lt6_12_85_1","6.12.85-1",{"version":60,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":61,"version_end_type":55,"fixed_in":9},"lt6_19_11_1","6.19.11-1",{"ecosystem":41,"name":63,"vendor":43,"product":63,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":63,"source":9,"versions":64},"linux-6.1",[65],{"version":66,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":67,"version_end_type":55,"fixed_in":9},"lt6_1_170_1~deb11u1","6.1.170-1~deb11u1"]