CVE-2026-53133
RDMA/umem: Fix truncation for block sizes >= 4G
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jun 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
a808273a495c657e33281b181fd7fcc2bb28f662 < 2ff4b7817e5b78070c30f5fb5e678e452a2628b3 a808273a495c657e33281b181fd7fcc2bb28f662 < dee2a49adeeb2a5e16a3fc858fa21b841c519802 a808273a495c657e33281b181fd7fcc2bb28f662 < cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f a808273a495c657e33281b181fd7fcc2bb28f662 < 8fe0231adebe086c8a459c790944ac026cd99c6e a808273a495c657e33281b181fd7fcc2bb28f662 < baf8685bcf56dc1efb44b8f6a57c42516e549068 a808273a495c657e33281b181fd7fcc2bb28f662 < afd35fec9297195b759078745549c2671223f24f a808273a495c657e33281b181fd7fcc2bb28f662 < ac1aad8e1281534ce936c250f68084fc79c5469e a808273a495c657e33281b181fd7fcc2bb28f662 < 15fe76e23615f502d051ef0768f86babaf08746c
Linux / Linux
5.2
References
git.kernel.org: https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3 git.kernel.org: https://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802 git.kernel.org: https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f git.kernel.org: https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e git.kernel.org: https://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068 git.kernel.org: https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f git.kernel.org: https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e git.kernel.org: https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c