CVE-2026-97421
RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 24, 2026 |
| Last Updated | Oct 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
a40c20dabdf9045270767c75918feb67f0727c89 < 3014da7587ce006cd08004fd6b257626b314e0a3 a40c20dabdf9045270767c75918feb67f0727c89 < ddccf6cc3861de2fe60986933bead79220e0d797 a40c20dabdf9045270767c75918feb67f0727c89 < e9bbb5f5349ef560ff6f0395564f04c3aa664559 a40c20dabdf9045270767c75918feb67f0727c89 < ae3cf7d2c4d506c5c91746321644e1a08d989e2a a40c20dabdf9045270767c75918feb67f0727c89 < 5fc5b73109540809b094710fac44da81dd8a3ff8 a40c20dabdf9045270767c75918feb67f0727c89 < 09ea6837a0434fb4db99528a5055b6d822135dcf 85e40ba1c4a5246b35e91c2ed69d4680426904d7 59f07434b297e2268f5d5c567db5b09145245cf1 488229b7729d7becf4c39c5e74fb709fb35115c2 5.4.73 < 5.5 5.8.17 < 5.9 5.9.2 < 5.10
Linux / Linux
5.10
References
git.kernel.org: https://git.kernel.org/stable/c/3014da7587ce006cd08004fd6b257626b314e0a3 git.kernel.org: https://git.kernel.org/stable/c/ddccf6cc3861de2fe60986933bead79220e0d797 git.kernel.org: https://git.kernel.org/stable/c/e9bbb5f5349ef560ff6f0395564f04c3aa664559 git.kernel.org: https://git.kernel.org/stable/c/ae3cf7d2c4d506c5c91746321644e1a08d989e2a git.kernel.org: https://git.kernel.org/stable/c/5fc5b73109540809b094710fac44da81dd8a3ff8 git.kernel.org: https://git.kernel.org/stable/c/09ea6837a0434fb4db99528a5055b6d822135dcf