CVE-2026-97421high

CVE-2026-97421: high-severity vulnerability in Linux

RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
Related CVEs — Linux

In the same product, most dangerous first.

CVE-2024-53197HIGHALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devicesEPSS 4.1%KEVCVE-2026-31431HIGHcrypto: algif_aead - Revert to operating out-of-placeEPSS 3.4%KEVCVE-2024-53104HIGHmedia: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_formatEPSS 3.4%KEVCVE-2025-39682CRITICALtls: fix handling of zero-length records on the rx_listEPSS 2.9%KEVCVE-2024-36971HIGHnet: fix __dst_negative_advice() raceEPSS 2.7%KEVCVE-2024-53150HIGHALSA: usb-audio: Fix out of bounds reads when finding clock sourcesEPSS 1.4%KEV
References
https://git.kernel.org/stable/c/09ea6837a0434fb4db99528a5055b6d822135dcfhttps://git.kernel.org/stable/c/3014da7587ce006cd08004fd6b257626b314e0a3https://git.kernel.org/stable/c/5fc5b73109540809b094710fac44da81dd8a3ff8https://git.kernel.org/stable/c/ae3cf7d2c4d506c5c91746321644e1a08d989e2ahttps://git.kernel.org/stable/c/ddccf6cc3861de2fe60986933bead79220e0d797https://git.kernel.org/stable/c/e9bbb5f5349ef560ff6f0395564f04c3aa664559