CVE-2021-47040 (GCVE-0-2021-47040)
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2025-05-04 07:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix overflows checks in provide buffers Colin reported before possible overflow and sign extension problems in io_provide_buffers_prep(). As Linus pointed out previous attempt did nothing useful, see d81269fecb8ce ("io_uring: fix provide_buffers sign extension"). Do that with help of check_<op>_overflow helpers. And fix struct io_provide_buf::len type, as it doesn't make much sense to keep it signed.
References
Impacted products
Vendor Product Version
Linux Linux Version: efe68c1ca8f49e8c06afd74b699411bfbb8ba1ff
Version: efe68c1ca8f49e8c06afd74b699411bfbb8ba1ff
Version: efe68c1ca8f49e8c06afd74b699411bfbb8ba1ff
Version: efe68c1ca8f49e8c06afd74b699411bfbb8ba1ff
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