Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix truncation for block sizes >= 4G When the iommu is used the linearization of the mapping can give a single block that is very large split across multiple SG entries. When __rdma_block_iter_next() reassembles the split SG entries it is overflowing the 32 bit stack values and computed the wrong DMA addresses for blocks after the truncation. Use the right types to hold DMA addresses.
References (8)
Core 8
Core References
Scores
CVSS v3
7.8
EPSS
0.0013
EPSS Percentile
2.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-681
Status
published
Products (27)
linux/Kernel
5.11.0 - 5.15.210linux
linux/Kernel
5.16.0 - 6.1.176linux
linux/Kernel
5.2.0 - 5.10.259linux
linux/Kernel
6.13.0 - 6.18.36linux
linux/Kernel
6.19.0 - 7.0.13linux
linux/Kernel
6.2.0 - 6.6.143linux
linux/Kernel
6.7.0 - 6.12.94linux
Linux/Linux
< 5.2
Linux/Linux
5.10.259 - 5.10.*
Linux/Linux
5.15.210 - 5.15.*
... and 17 more
Published
Jun 25, 2026
Tracked Since
Jun 25, 2026