VMware Photon OS: CVE-2022-4696

VMware Photon OS: CVE-2022-4696

Severity

7

CVSS

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

Published

01/11/2023

Created

01/21/2025

Added

01/20/2025

Modified

02/04/2025

Description

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

Solution(s)

• vmware-photon_os_update_tdnf

References

• https://attackerkb.com/topics/cve-2022-4696
• CVE - 2022-4696