CVEvulnerability
CVE-2026-97421
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-24
- Last modified
- 2026-10-03
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
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
References
- https://git.kernel.org/stable/c/09ea6837a0434fb4db99528a5055b6d822135dcf git.kernel.org
- https://git.kernel.org/stable/c/3014da7587ce006cd08004fd6b257626b314e0a3 git.kernel.org
- https://git.kernel.org/stable/c/5fc5b73109540809b094710fac44da81dd8a3ff8 git.kernel.org
- https://git.kernel.org/stable/c/ae3cf7d2c4d506c5c91746321644e1a08d989e2a git.kernel.org
- https://git.kernel.org/stable/c/ddccf6cc3861de2fe60986933bead79220e0d797 git.kernel.org
- https://git.kernel.org/stable/c/e9bbb5f5349ef560ff6f0395564f04c3aa664559 git.kernel.org