Answer in brief
CVE-2022-49932 records a Medium severity (CVSS 5.5) vulnerability in KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=dbef2808af6c594922fe32833b30f55f35e9da6d <e136e969d268b9b89329c816c002e53f60e82985 || >=dbef2808af6c594922fe32833b30f55f35e9da6d <e28533c08023c4b319b7f2cd77f3f7c9204eb517 || >=dbef2808af6c594922fe32833b30f55f35e9da6d <e32b120071ea114efc0b4ddd439547750b85f618 || b2f7d0adc1260fa33ff3e992d18ff15873e68a67 || 2c0bf2560ca18abe1451db23b8ef8700c67cc44f || f9971a898a815c2a6cce2932e91a576b28ed4cce || 40888c31aca3a46f266f1f121679f8e1982df085 || cd3f438fbb9cb60da32dd2b665f7dc9baba1c4ad || e35a2dc8c7f664ae8a9cc46d19985dc79bfc1083 || >=4.9.220 <4.10 || >=4.14.177 <4.15 || >=4.19.116 <4.20 || >=5.4.33 <5.5 || >=5.5.18 <5.6 || >=5.6.5 <5.7 | e136e969d268b9b89329c816c002e53f60e82985, e28533c08023c4b319b7f2cd77f3f7c9204eb517, e32b120071ea114efc0b4ddd439547750b85f618, 4.10, 4.15, 4.20, 5.5, 5.6, 5.7 |
| Linux/Linuxgeneric | 5.7 | Not reported |
Published upstream
May 2, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace Call kvm_init() only after _all_ setup is complete, as kvm_init() exposes /dev/kvm to userspace and thus allows userspace to create VMs (and call other ioctls). E.g. KVM will encounter a NULL pointer when attempting to add a vCPU to the per-CPU loaded_vmcss_on_cpu list if userspace is able to create a VM before vmx_init() configures said list. BUG: kernel NULL pointer dereference, address: 0000000000000008 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 0 P4D 0 Oops: 0002 [#1] SMP CPU: 6 PID: 1143 Comm: stable Not tainted 6.0.0-rc7+ #988 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:vmx_vcpu_load_vmcs+0x68/0x230 [kvm_intel] <TASK> vmx_vcpu_load+0x16/0x60 [kvm_intel] kvm_arch_vcpu_load+0x32/0x1f0 [kvm] vcpu_load+0x2f/0x40 [kvm] kvm_arch_vcpu_create+0x231/0x310 [kvm] kvm_vm_ioctl+0x79f/0xe10 [kvm] ? handle_mm_fault+0xb1/0x220 __x64_sys_ioctl+0x80/0xb0 do_syscall_64+0x2b/0x50 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f5a6b05743b </TASK> Modules linked in: vhost_net vhost vhost_iotlb tap kvm_intel(+) kvm irqbypass
Quoted source text, attributed separately from HOL analysis.