NetSight
IP …
high7.8

CVE-2022-4696

There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation.

Impact

There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above

Affected products

VendorProductAffected versions
NetappH410s Firmware
All versions
NetappH410c Firmware
All versions
NetappH700s Firmware
All versions
NetappH500s Firmware
All versions
NetappH300s Firmware
All versions
LinuxLinux Kernel
from 5.4 before 5.10.160
from 5.11 before 5.12

Weakness classification

CWE-763CWE-416

References