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CVE-2026-74394

CRITICALCVSS 9.8/10EPSS 0.19%

Last modified

CVE-2026-74394 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.19%

8.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d; >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < 3efa5301137140a3ca3677a9098c0a93a0acfd49; >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < 067b9556eeb007f28b7c2033b4dcde5b6d88418f; >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < dcf7a986f377cce0749ed53f1d64195fbd5fdf91; >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < 07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e; >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < 65572fbd86033ae2370125593d59b8be34253aaf; >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < 72497172a4799119a0282a5eb5e2b8ddcc821921; >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639, < eb4ecdf631fe00e8020bf461503cb9b7017ed796
LinuxLinux5.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74394?
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.
How severe is CVE-2026-74394?
CVE-2026-74394 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74394?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST