CVE-2022-4696
Vulnerability from cvelistv5
Published
2023-01-11 12:33
Modified
2024-08-03 01:48
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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
References
cve-coordination@google.comhttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61aMailing List, Patch, Vendor Advisory
cve-coordination@google.comhttps://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61aExploit, Third Party Advisory
Impacted products
LinuxLinux Kernel
Show details on NVD website

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