CVE-2022-48861
In the Linux kernel, the following vulnerability has been resolved: vdpa: fix use-after-free on vp_vdpa_remove When vp_vdpa driver is unbind, vp_vdpa is freed in vdpa_unregister_device and then vp_vdpa->mdev.pci_dev is dereferenced in vp_modern_remove,…
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: vdpa: fix use-after-free on vp_vdpa_remove When vp_vdpa driver is unbind, vp_vdpa is freed in vdpa_unregister_device and then vp_vdpa->mdev.pci_dev is dereferenced in vp_modern_remove, triggering use-after-free. Call Trace of unbinding driver free vp_vdpa : do_syscall_64 vfs_write kernfs_fop_write_iter device_release_driver_internal pci_device_remove vp_vdpa_remove vdpa_unregister_device kobject_release device_release kfree Call Trace of dereference vp_vdpa->mdev.pci_dev: vp_modern_remove pci_release_selected_regions pci_release_region pci_resource_len pci_resource_end (dev)->resource[(bar)].end
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/4b1743bc715a3691a63ac21b349079b07bf1b19ePatch
- https://git.kernel.org/stable/c/dc54ba9932aeaaa1a21fe214af1f446593a78274Patch
- https://git.kernel.org/stable/c/eb057b44dbe35ae14527830236a92f51de8f9184Patch
- https://git.kernel.org/stable/c/4b1743bc715a3691a63ac21b349079b07bf1b19ePatch
- https://git.kernel.org/stable/c/dc54ba9932aeaaa1a21fe214af1f446593a78274Patch
- https://git.kernel.org/stable/c/eb057b44dbe35ae14527830236a92f51de8f9184Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.