Vulnerability 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
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/09ea6837a0434fb4db99528a5055b6d822135dcf
- https://git.kernel.org/stable/c/3014da7587ce006cd08004fd6b257626b314e0a3
- https://git.kernel.org/stable/c/5fc5b73109540809b094710fac44da81dd8a3ff8
- https://git.kernel.org/stable/c/ae3cf7d2c4d506c5c91746321644e1a08d989e2a
- https://git.kernel.org/stable/c/ddccf6cc3861de2fe60986933bead79220e0d797
- https://git.kernel.org/stable/c/e9bbb5f5349ef560ff6f0395564f04c3aa664559
FAQ
What is CVE-2026-97421?
CVE-2026-97421 is a vulnerability with a CVSS score of 7.8 (HIGH). 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:...
How severe is CVE-2026-97421?
CVE-2026-97421 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-97421?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.