Executive Summary

Informations
Name CVE-2022-48861 First vendor Publication 2024-07-16
Vendor Cve Last vendor Modification 2024-07-23

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-48861

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 7
Os 3463

Sources (Detail)

https://git.kernel.org/stable/c/4b1743bc715a3691a63ac21b349079b07bf1b19e
https://git.kernel.org/stable/c/dc54ba9932aeaaa1a21fe214af1f446593a78274
https://git.kernel.org/stable/c/eb057b44dbe35ae14527830236a92f51de8f9184
Source Url

Alert History

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Date Informations
2024-08-22 02:35:05
  • Multiple Updates
2024-08-02 13:43:22
  • Multiple Updates
2024-08-02 01:31:24
  • Multiple Updates
2024-07-23 21:27:34
  • Multiple Updates
2024-07-16 17:27:23
  • First insertion