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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
087f997870a948820ec366701d178f402c6a23a3 to < c6a2706e08b8a1b2d3740161c0977d38e596c1eeaffected087f997870a948820ec366701d178f402c6a23a3 to < a69a9b53c54e2d33e2a5b1ea4a9a71fd01c6cf3aaffected087f997870a948820ec366701d178f402c6a23a3 to < 33503c083fda048c77903460ac0429e1e2c0e341affected
Linux Linux
Default version status: affected
6.14affected0 to < 6.14unaffected6.15.11 to ≤ 6.15.*unaffected6.16.2 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected