CVE-2024-35880 (GCVE-0-2024-35880)
Vulnerability from cvelistv5
Published
2024-05-19 08:34
Modified
2026-08-05 11:30
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.
References
Impacted products
Vendor Product Version
Linux Linux Version: 09f7520048eaaee9709091cd2787966f807da7c5
Version: 5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252
Version: 5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252
Version: 6.6.5   ≤
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