{"id":"CVE-2025-39963","summary":"io_uring: fix incorrect io_kiocb reference in io_link_skb","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix incorrect io_kiocb reference in io_link_skb\n\nIn io_link_skb function, there is a bug where prev_notif is incorrectly\nassigned using 'nd' instead of 'prev_nd'. This causes the context\nvalidation check to compare the current notification with itself instead\nof comparing it with the previous notification.\n\nFix by using the correct prev_nd parameter when obtaining prev_notif.","modified":"2026-05-18T05:59:30.889740305Z","published":"2025-10-09T12:13:23.345Z","related":["SUSE-SU-2025:21080-1","SUSE-SU-2025:21147-1","SUSE-SU-2025:21180-1","SUSE-SU-2026:20149-1","SUSE-SU-2026:20164-1","SUSE-SU-2026:20168-1","SUSE-SU-2026:20169-1","SUSE-SU-2026:20171-1","SUSE-SU-2026:20202-1","openSUSE-SU-2025:20091-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39963.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2c139a47eff8de24e3350dadb4c9d5e3426db826"},{"type":"WEB","url":"https://git.kernel.org/stable/c/50a98ce1ea694f1ff8e87bc2f8f84096d1736f6a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a89c34babc2e5834aa0905278f26f4dbe4b26b76"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39963.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39963"},{"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":"6fe4220912d19152a26ce19713ab232f4263018d"},{"fixed":"a89c34babc2e5834aa0905278f26f4dbe4b26b76"},{"fixed":"50a98ce1ea694f1ff8e87bc2f8f84096d1736f6a"},{"fixed":"2c139a47eff8de24e3350dadb4c9d5e3426db826"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39963.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.10.0"},{"fixed":"6.12.49"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.16.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39963.json"}}],"schema_version":"1.7.5"}