Critical severity · published Aug 15, 2026
CVE-2026-74394
RDMA/srpt: fix integer overflow in immediate data length check
9.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 before c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d; 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 before 3efa5301137140a3ca3677a9098c0a93a0acfd49; 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 before 067b9556eeb007f28b7c2033b4dcde5b6d88418f; 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 before dcf7a986f377cce0749ed53f1d64195fbd5fdf91; 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 before 07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e; 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 before 65572fbd86033ae2370125593d59b8be34253aaf; +3 more · source: vendor