{"id":"CVE-2026-97413","summary":"RDMA/rtrs-srv: Fix integer underflow in process_read and process_write","details":"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 = off - usr_len without validating that\nusr_len \u003c= off. A malicious RDMA client can send usr_len \u003e 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 \u003c= 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.","modified":"2026-10-14T11:26:58.230587288Z","published":"2026-09-24T16:03:21.010Z","related":["SUSE-SU-2026:4640-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97413.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/24ad03bfeda05fca04c56677e57fd3d6bc3e9978"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2c52b2afded988233cd4ccc185cf5147bbc77a76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b1e26e70d7ca9f0906af2283558a530eeb1f066"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b042b4947752df0b3d16e683ac09fb4f7f0e33e0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c76e9123ab91a903396d26e6ab1b5caae5c6b149"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97413.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97413"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9cb837480424e78ed585376f944088246685aec3"},{"fixed":"6b1e26e70d7ca9f0906af2283558a530eeb1f066"},{"fixed":"2c52b2afded988233cd4ccc185cf5147bbc77a76"},{"fixed":"b042b4947752df0b3d16e683ac09fb4f7f0e33e0"},{"fixed":"24ad03bfeda05fca04c56677e57fd3d6bc3e9978"},{"fixed":"c76e9123ab91a903396d26e6ab1b5caae5c6b149"},{"fixed":"54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-97413.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.8.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-97413.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}