EUVD Vulnerability Catalog
EUVD-2026-86026
Severity: CRITICAL
Base Score: 9.8
CVSS Version: 3.1
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
usr_len is read from a network-supplied message field (le16_to_cpu)
and used to compute data_len = off - usr_len without validating that
usr_len <= off. A malicious RDMA client can send usr_len > off causing
an integer underflow, resulting in data_len wrapping to a huge size_t
value which is then passed to the rdma_ev callback as a memory length,
leading to out-of-bounds memory access.
Fix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()
in both process_read() and process_write(), ensuring the early return
path acquires no reference and has no resource leak.
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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Attack Vector (AV): Network
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Attack Complexity (AC): Low
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Privileges Required (PR): None
▪
User Interaction (UI): None
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Scope (S): Unchanged
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Confidentiality Impact (C): High
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Integrity Impact (I): High
▪
Availability Impact (A): High
Affected Vendors & Systems
Vendor
Linux
References & Advisory Links
- https://git.kernel.org/stable/c/6b1e26e70d7ca9f0906af2283558a530eeb1f066
- https://git.kernel.org/stable/c/2c52b2afded988233cd4ccc185cf5147bbc77a76
- https://git.kernel.org/stable/c/b042b4947752df0b3d16e683ac09fb4f7f0e33e0
- https://git.kernel.org/stable/c/24ad03bfeda05fca04c56677e57fd3d6bc3e9978
- https://git.kernel.org/stable/c/c76e9123ab91a903396d26e6ab1b5caae5c6b149
- https://git.kernel.org/stable/c/54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
Linux
EPSS Probability
0.45
Known Aliases
CVE-2026-97413
GHSA-wv45-qhgq-9h5f
Published On
2026-09-24
Last Updated
2026-10-03