Ubuntu: (CVE-2022-48861): linux-intel-iotg-5.15 vulnerability

Ubuntu: (CVE-2022-48861): linux-intel-iotg-5.15 vulnerability

Severity

5

CVSS

(AV:L/AC:L/Au:S/C:N/I:N/A:C)

Published

07/16/2024

Created

11/21/2024

Added

11/19/2024

Modified

02/11/2025

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

Solution(s)

• ubuntu-upgrade-linux-intel-iotg-5-15
• ubuntu-upgrade-linux-realtime

References

• https://attackerkb.com/topics/cve-2022-48861
• CVE - 2022-48861
• https://git.kernel.org/linus/eb057b44dbe35ae14527830236a92f51de8f9184
• https://git.kernel.org/stable/c/4b1743bc715a3691a63ac21b349079b07bf1b19e
• https://git.kernel.org/stable/c/dc54ba9932aeaaa1a21fe214af1f446593a78274
• https://git.kernel.org/stable/c/eb057b44dbe35ae14527830236a92f51de8f9184
• https://www.cve.org/CVERecord?id=CVE-2022-48861