vulnerability
Ubuntu: (CVE-2022-48861): linux-intel-iotg-5.15 vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Jul 16, 2024 | Nov 19, 2024 | Sep 1, 2025 |
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
Solutions
References
- CVE-2022-48861
- https://attackerkb.com/topics/CVE-2022-48861
- CWE-416
- URL-https://git.kernel.org/linus/eb057b44dbe35ae14527830236a92f51de8f9184
- URL-https://git.kernel.org/stable/c/4b1743bc715a3691a63ac21b349079b07bf1b19e
- URL-https://git.kernel.org/stable/c/dc54ba9932aeaaa1a21fe214af1f446593a78274
- URL-https://git.kernel.org/stable/c/eb057b44dbe35ae14527830236a92f51de8f9184
- URL-https://www.cve.org/CVERecord?id=CVE-2022-48861
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