CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
EPSS
Percentile
5.1%
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
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux-intel-iotg-5.15 | < any | UNKNOWN |
git.kernel.org/linus/eb057b44dbe35ae14527830236a92f51de8f9184 (5.17-rc8)
git.kernel.org/stable/c/4b1743bc715a3691a63ac21b349079b07bf1b19e
git.kernel.org/stable/c/dc54ba9932aeaaa1a21fe214af1f446593a78274
git.kernel.org/stable/c/eb057b44dbe35ae14527830236a92f51de8f9184
launchpad.net/bugs/cve/CVE-2022-48861
nvd.nist.gov/vuln/detail/CVE-2022-48861
security-tracker.debian.org/tracker/CVE-2022-48861
www.cve.org/CVERecord?id=CVE-2022-48861