Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 087f997870a948820ec366701d178f402c6a23a3 before c6a2706e08b8a1b2d3740161c0977d38e596c1ee; affected 087f997870a948820ec366701d178f402c6a23a3 before a69a9b53c54e2d33e2a5b1ea4a9a71fd01c6cf3a; affected 087f997870a948820ec366701d178f402c6a23a3 before 33503c083fda048c77903460ac0429e1e2c0e341 |
| Linux / Linux | affected 6.14; unaffected 0 before 6.14; unaffected 6.15.11 through 6.15.*; unaffected 6.16.2 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.