Huawei EulerOS: CVE-2022-4696: kernel security update
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)
- huawei-euleros-2_0_sp11-upgrade-bpftool
- huawei-euleros-2_0_sp11-upgrade-kernel
- huawei-euleros-2_0_sp11-upgrade-kernel-abi-stablelists
- huawei-euleros-2_0_sp11-upgrade-kernel-tools
- huawei-euleros-2_0_sp11-upgrade-kernel-tools-libs
- huawei-euleros-2_0_sp11-upgrade-python3-perf
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