{"id":"CVE-2026-74394","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74394","summary":"RDMA/srpt: fix integer overflow in immediate data length check","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srpt: fix integer overflow in immediate data length check\n\nimm_buf->len is a user-controlled uint32_t received from the network.\nAdding it to imm_data_offset without overflow checking allows a\nmalicious initiator to send len=0xFFFFFFFF, causing req_size to wrap\naround to a small value, bypassing the bounds check, and subsequently\npassing a ~4GB length to sg_init_one().\n\nUse check_add_overflow() to detect wrapping before the comparison.","published":"2026-08-15T05:59:07.144Z","modified":"2026-08-18T03:56:47.095965206Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.261"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/067b9556eeb007f28b7c2033b4dcde5b6d88418f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3efa5301137140a3ca3677a9098c0a93a0acfd49"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65572fbd86033ae2370125593d59b8be34253aaf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/72497172a4799119a0282a5eb5e2b8ddcc821921"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dcf7a986f377cce0749ed53f1d64195fbd5fdf91"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eb4ecdf631fe00e8020bf461503cb9b7017ed796"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74394.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74394"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:47.095965206Z"}}