{"id":"CVE-2026-97413","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-srv: Fix integer underflow in process_read and process_write\n\nusr_len is read from a network-supplied message field (le16_to_cpu)\nand used to compute data_len…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-srv: Fix integer underflow in process_read and process_write\n\nusr_len is read from a network-supplied message field (le16_to_cpu)\nand used to compute data_len…","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","vendor":"Linux","product":"Linux","affected":["Linux >= 9cb837480424e78ed585376f944088246685aec3 < 6b1e26e70d7ca9f0906af2283558a530eeb1f066","Linux >= 9cb837480424e78ed585376f944088246685aec3 < 2c52b2afded988233cd4ccc185cf5147bbc77a76","Linux >= 9cb837480424e78ed585376f944088246685aec3 < b042b4947752df0b3d16e683ac09fb4f7f0e33e0","Linux >= 9cb837480424e78ed585376f944088246685aec3 < 24ad03bfeda05fca04c56677e57fd3d6bc3e9978","Linux >= 9cb837480424e78ed585376f944088246685aec3 < c76e9123ab91a903396d26e6ab1b5caae5c6b149","Linux >= 9cb837480424e78ed585376f944088246685aec3 < 54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5","Linux 5.8"],"published":"2026-09-24","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:17:53.320","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97413","references":[{"url":"https://git.kernel.org/stable/c/24ad03bfeda05fca04c56677e57fd3d6bc3e9978","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2c52b2afded988233cd4ccc185cf5147bbc77a76","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6b1e26e70d7ca9f0906af2283558a530eeb1f066","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b042b4947752df0b3d16e683ac09fb4f7f0e33e0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c76e9123ab91a903396d26e6ab1b5caae5c6b149","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00501,"epssPercentile":0.42726,"ingestedAt":"2026-09-24T16:47:15.887Z","slug":"CVE-2026-97413","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-srv: Fix integer underflow in process_read and process_write\n\nusr_len is read from a network-supplied message field (le16_to_cpu)\nand used to compute data_len = off - usr_len without validating that\nusr_len <= off. A malicious RDMA client can send usr_len > off causing\nan integer underflow, resulting in data_len wrapping to a huge size_t\nvalue which is then passed to the rdma_ev callback as a memory length,\nleading to out-of-bounds memory access.\n\nFix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()\nin both process_read() and process_write(), ensuring the early return\npath acquires no reference and has no resource leak.\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":[{"seq":210575,"id":"CVE-2026-97413","ts":1790316054902,"field":"cvss","old":null,"new":"9.8"},{"seq":210574,"id":"CVE-2026-97413","ts":1790316054902,"field":"severity","old":"none","new":"critical"}]}