CVE-2026-53133 Details
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.
A vulnerability in the Linux kernel's RDMA umem handling has been addressed. When the IOMMU is used, large blocks can be split across multiple scatter-gather (SG) entries. The function '__rdma_block_iter_next()' incorrectly reassembles these entries, leading to a stack overflow of 32-bit values and miscalculated DMA addresses for blocks following the truncation. This issue arises with block sizes of 4GB or larger.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c | kernel.org | Patch |
| https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e | kernel.org | Patch |
| https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e | kernel.org | Patch |
| https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f | kernel.org | Patch |
| https://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068 | kernel.org | Patch |
| https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f | kernel.org | Patch |
| https://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-681 | Incorrect Conversion between Numeric Types | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.2, < 5.10.259 >= 5.11, < 5.15.210 >= 5.16, < 6.1.176 >= 6.2, < 6.6.143 >= 6.7, < 6.12.94 >= 6.13, < 6.18.36 >= 6.19, < 7.0.13 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 7.1 rc7 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 7, 2026 | Initial Analysis | [email protected] |
| Jun 28, 2026 | CVE Modified | kernel.org |
| Jun 25, 2026 | New CVE Received | kernel.org |