CVEvulnerability
CVE-2026-74394
9.8 CRITICAL
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/067b9556eeb007f28b7c2033b4dcde5b6d88418f git.kernel.org
- https://git.kernel.org/stable/c/07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e git.kernel.org
- https://git.kernel.org/stable/c/3efa5301137140a3ca3677a9098c0a93a0acfd49 git.kernel.org
- https://git.kernel.org/stable/c/65572fbd86033ae2370125593d59b8be34253aaf git.kernel.org
- https://git.kernel.org/stable/c/72497172a4799119a0282a5eb5e2b8ddcc821921 git.kernel.org
- https://git.kernel.org/stable/c/c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d git.kernel.org
- https://git.kernel.org/stable/c/dcf7a986f377cce0749ed53f1d64195fbd5fdf91 git.kernel.org
- https://git.kernel.org/stable/c/eb4ecdf631fe00e8020bf461503cb9b7017ed796 git.kernel.org