Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/memmap: cast nr_pages to size_t before shifting If the allocated size exceeds UINT_MAX, then it's necessary to cast the mr->nr_pages value to size_t to prevent it from overflowing. In practice this isn't much of a concern as the required memory size will have been validated upfront, and accounted to the user. And > 4GB sizes will be necessary to make the lack of a cast a problem, which greatly exceeds normal user locked_vm settings that are generally in the kb to mb range. However, if root is used, then accounting isn't done, and then it's possible to hit this issue.
Product status
087f997870a948820ec366701d178f402c6a23a3 (git) before c6a2706e08b8a1b2d3740161c0977d38e596c1ee
087f997870a948820ec366701d178f402c6a23a3 (git) before a69a9b53c54e2d33e2a5b1ea4a9a71fd01c6cf3a
087f997870a948820ec366701d178f402c6a23a3 (git) before 33503c083fda048c77903460ac0429e1e2c0e341
6.14
Any version before 6.14
6.15.11 (semver)
6.16.2 (semver)
6.17 (original_commit_for_fix)
References
git.kernel.org/...c/c6a2706e08b8a1b2d3740161c0977d38e596c1ee
git.kernel.org/...c/a69a9b53c54e2d33e2a5b1ea4a9a71fd01c6cf3a
git.kernel.org/...c/33503c083fda048c77903460ac0429e1e2c0e341
