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CVE-2026-74394

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: fix integer overflow in immediate data length check imm_buf->len is a user-controlled uint32_t received from the net…

Published Aug 15, 2026EPSS 0.54%

Overview

CVE-2026-74394 is a critical-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/srpt: fix integer overflow in immediate data length check

imm_buf->len is a user-controlled uint32_t received from the network.

Adding it to imm_data_offset without overflow checking allows a

malicious initiator to send len=0xFFFFFFFF, causing req_size to wrap

around to a small value, bypassing the bounds check, and subsequently

passing a ~4GB length to sg_init_one().

Use check_add_overflow() to detect wrapping before the comparison.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/067b9556eeb007f28b7c2033b4dcde5b6d88418fRefgit.kernel.org/stable/c/07dec3f6dcb6c6cc891162d252b800eb0e6d5e8eRefgit.kernel.org/stable/c/3efa5301137140a3ca3677a9098c0a93a0acfd49Refgit.kernel.org/stable/c/65572fbd86033ae2370125593d59b8be34253aafRefgit.kernel.org/stable/c/72497172a4799119a0282a5eb5e2b8ddcc821921Refgit.kernel.org/stable/c/c82c860f8c8e4f4f454c9f14d0ad0c0466965f7dRefgit.kernel.org/stable/c/dcf7a986f377cce0749ed53f1d64195fbd5fdf91Refgit.kernel.org/stable/c/eb4ecdf631fe00e8020bf461503cb9b7017ed796

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74394?

CVE-2026-74394 is a critical-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-74394?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-74394?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-74394?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74394 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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