CVE-2022-49932
published 2025-05-02CVE-2022-49932: In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace Call kvm_init()…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.20%
10.1th percentile
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]
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
Modules linked in: vhost_net vhost vhost_iotlb tap kvm_intel(+) kvm irqbypass
Affected
25 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.20-1 (bookworm) | linux 6.1.20-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 4.14.177 < 4.15 | 4.15 |
| linux | linux | >= 4.19.116 < 4.20 | 4.20 |
| linux | linux | >= 4.9.220 < 4.10 | 4.10 |
| linux | linux | >= 5.4.33 < 5.5 | 5.5 |
| linux | linux | >= 5.5.18 < 5.6 | 5.6 |
| linux | linux | >= 5.6.5 < 5.7 | 5.7 |
| linux | linux | >= dbef2808af6c594922fe32833b30f55f35e9da6d < e136e969d268b9b89329c816c002e53f60e82985 | e136e969d268b9b89329c816c002e53f60e82985 |
| linux | linux | >= dbef2808af6c594922fe32833b30f55f35e9da6d < e28533c08023c4b319b7f2cd77f3f7c9204eb517 | e28533c08023c4b319b7f2cd77f3f7c9204eb517 |
| linux | linux | >= dbef2808af6c594922fe32833b30f55f35e9da6d < e32b120071ea114efc0b4ddd439547750b85f618 | e32b120071ea114efc0b4ddd439547750b85f618 |
| linux | linux_kernel | < 6.1.20 | 6.1.20 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 6.2 < 6.2.7 | 6.2.7 |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-gfj7-8hq4-g63x: In the Linux kernel, the following vulnerability has been resolved:
KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
Call kvm
ghsa_unreviewed·2025-05-02
CVE-2022-49932 [MEDIUM] CWE-476 GHSA-gfj7-8hq4-g63x: In the Linux kernel, the following vulnerability has been resolved:
KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
Call kvm
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 02/06/2
OSV
CVE-2022-49932: In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace Call kvm_i
osv·2025-05-02·CVSS 5.5
CVE-2022-49932 [MEDIUM] CVE-2022-49932: In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace Call kvm_i
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
Microsoft
KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
vendor_msrc·2025-05-13·CVSS 5.5
CVE-2022-49932 [MEDIUM] KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Red Hat
kernel: KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
vendor_redhat·2025-05-02·CVSS 5.5
CVE-2022-49932 [MEDIUM] CWE-362 kernel: KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
kernel: KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace
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-rc
Debian
CVE-2022-49932: linux - In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: D...
vendor_debian·2022·CVSS 5.5
CVE-2022-49932 [MEDIUM] CVE-2022-49932: linux - In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: D...
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
No detection rules found.
No public exploits indexed.
2025-05-02
Published