CVE-2026-46145
Analyzed Analyzed - Analysis Complete
RDMA/mana Memory Corruption via rx_hash_key_len Validation Bypass

Publication date: 2026-05-28

Last updated on: 2026-06-10

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/mana: Validate rx_hash_key_len Sashiko points out that rx_hash_key_len comes from a uAPI structure and is blindly passed to memcpy, allowing the userspace to trash kernel memory. Bounds check it so the memcpy cannot overflow.
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Meta Information
Published
2026-05-28
Last Modified
2026-06-10
Generated
2026-06-17
AI Q&A
2026-05-28
EPSS Evaluated
2026-06-16
NVD
CVE-2026-46145
EUVD
EUVD-2026-32772
Affected Vendors & Products
Showing 6 associated CPEs
Vendor Product Version / Range
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel From 6.13 (inc) to 6.18.30 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.141 (exc)
linux linux_kernel From 6.19 (inc) to 7.0.7 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.88 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel within the RDMA/mana component. It involves the rx_hash_key_len value, which is taken from a user API structure and used without proper validation in a memcpy operation. Because rx_hash_key_len is not checked for bounds, a malicious user can cause the memcpy to overflow, potentially overwriting kernel memory.

Impact Analysis

The vulnerability allows userspace to overwrite kernel memory by exploiting the unchecked length parameter in memcpy. This can lead to memory corruption, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code with kernel privileges.

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