{"id":"CVE-2026-74394","title":"RDMA/srpt: fix integer overflow in immediate data length check","summary":"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 witho…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d","Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 3efa5301137140a3ca3677a9098c0a93a0acfd49","Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 067b9556eeb007f28b7c2033b4dcde5b6d88418f","Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < dcf7a986f377cce0749ed53f1d64195fbd5fdf91","Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e","Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 65572fbd86033ae2370125593d59b8be34253aaf","Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 72497172a4799119a0282a5eb5e2b8ddcc821921","Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < eb4ecdf631fe00e8020bf461503cb9b7017ed796","Linux 5.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T18:55:19.237271Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:05:40.869Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74394","references":[{"url":"https://git.kernel.org/stable/c/c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d"},{"url":"https://git.kernel.org/stable/c/3efa5301137140a3ca3677a9098c0a93a0acfd49"},{"url":"https://git.kernel.org/stable/c/067b9556eeb007f28b7c2033b4dcde5b6d88418f"},{"url":"https://git.kernel.org/stable/c/dcf7a986f377cce0749ed53f1d64195fbd5fdf91"},{"url":"https://git.kernel.org/stable/c/07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e"},{"url":"https://git.kernel.org/stable/c/65572fbd86033ae2370125593d59b8be34253aaf"},{"url":"https://git.kernel.org/stable/c/72497172a4799119a0282a5eb5e2b8ddcc821921"},{"url":"https://git.kernel.org/stable/c/eb4ecdf631fe00e8020bf461503cb9b7017ed796"}],"tags":["cve.org"],"epss":0.0054,"epssPercentile":0.44177,"ingestedAt":"2026-10-16T19:46:24.369Z","slug":"CVE-2026-74394","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d`\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 3efa5301137140a3ca3677a9098c0a93a0acfd49`\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 067b9556eeb007f28b7c2033b4dcde5b6d88418f`\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < dcf7a986f377cce0749ed53f1d64195fbd5fdf91`\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e`\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 65572fbd86033ae2370125593d59b8be34253aaf`\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < 72497172a4799119a0282a5eb5e2b8ddcc821921`\n- `Linux >= 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 < eb4ecdf631fe00e8020bf461503cb9b7017ed796`\n- `Linux 5.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}