CVE-2024-53092 virtio_pci: Fix admin vq cleanup by using correct info pointer
A kernel NULL pointer dereference in virtio_pci admin vq cleanup allows local attackers to cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-53092?
CVE-2024-53092 is a high-severity vulnerability in Linux kernel, published on 21 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
virtio_pci: Fix admin vq cleanup by using correct info pointer
vp_modern_avq_cleanup() and vp_del_vqs() clean up admin vq resources by virtio_pci_vq_info pointer. The info pointer of admin vq is stored in vp_dev->admin_vq.info instead of vp_dev->vqs[]. Using the info pointer from vp_dev->vqs[] for admin vq causes a kernel NULL pointer dereference bug. In vp_modern_avq_cleanup() and vp_del_vqs(), get the info pointer from vp_dev->admin_vq.info for admin vq to clean up the resources. Also make info ptr as argument of vp_del_vq() to be symmetric with vp_setup_vq().
vp_reset calls vp_modern_avq_cleanup, and causes the Call Trace: ================================================================== BUG: kernel NULL pointer dereference, address:0000000000000000 ... CPU: 49 UID: 0 PID: 4439 Comm: modprobe Not tainted 6.11.0-rc5 #1 RIP: 0010:vp_reset+0x57/0x90 [virtio_pci] Call Trace: <TASK> ... ? vp_reset+0x57/0x90 [virtio_pci] ? vp_reset+0x38/0x90 [virtio_pci] virtio_reset_device+0x1d/0x30 remove_vq_common+0x1c/0x1a0 [virtio_net] virtnet_remove+0xa1/0xc0 [virtio_net] virtio_dev_remove+0x46/0xa0 ... virtio_pci_driver_exit+0x14/0x810 [virtio_pci] ==================================================================
Weakness: CWE-476
Which versions are affected by CVE-2024-53092?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-53092?
Apply the vendor's patch.
Is CVE-2024-53092 being exploited?
There is no known exploitation of CVE-2024-53092 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-53092, DEBIAN-CVE-2024-53092, GHSA-p7x7-vrh2-wvvc, UBUNTU-CVE-2024-53092.