CVE-2022-4696

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

Score
CVSS 3.1 7.8 High
Status
Analyzed - cve-coordination@google.com
Published
2023-01-11
Last modified
2024-08-03
Weaknesses
CWE-416, CWE-763

Affected products

References

 
 
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