What happened
In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz() Several corner cases, especially important on 32 bits: - umem->iova is u64, the function argument should pass in u64 or iova will be truncated - Check that the length is not too large for the iova - Check that lengths > 4G don't overflow the GENMASK
Affected versions
Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 through before ae3cf7d2c4d506c5c91746321644e1a08d989e2a (git); 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 through before 5fc5b73109540809b094710fac44da81dd8a3ff8 (git); 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 through before 09ea6837a0434fb4db99528a5055b6d822135dcf (git); before 6.12.111 (semver); before 6.18.53 (semver) Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.