{"id":"CVE-2025-68317","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zctx: check chained notif contexts\n\nSend zc only links ubuf_info for requests coming from the same context.\nThere are some ambiguous syz reports, so let's chec…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zctx: check chained notif contexts\n\nSend zc only links ubuf_info for requests coming from the same context.\nThere are some ambiguous syz reports, so let's chec…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-1288"],"vendor":"Linux","product":"Linux","affected":["Linux >= 6fe4220912d19152a26ce19713ab232f4263018d < aaafd17d3f4be2c15539359a5b4bfa00237f687f","Linux >= 6fe4220912d19152a26ce19713ab232f4263018d < d664a3ce3a604231a0b144c152a3755d03b18b60","Linux >= 6fe4220912d19152a26ce19713ab232f4263018d < ab3ea6eac5f45669b091309f592c4ea324003053","Linux 6.10"],"published":"2025-12-16","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:19:12.023","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-68317","references":[{"url":"https://git.kernel.org/stable/c/aaafd17d3f4be2c15539359a5b4bfa00237f687f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ab3ea6eac5f45669b091309f592c4ea324003053","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d664a3ce3a604231a0b144c152a3755d03b18b60","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68317.json"},{"url":"https://access.redhat.com/security/cve/CVE-2025-68317"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2422805"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-68317"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68317"},{"url":"https://lore.kernel.org/linux-cve-announce/2025121656-CVE-2025-68317-28c8@gregkh/T"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00142,"epssPercentile":0.03491,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T22:00:54.118508Z"},"scores":{"nvd":7.8,"vendor":5.5},"ingestedAt":"2026-10-14T16:40:32.057Z","slug":"CVE-2025-68317","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zctx: check chained notif contexts\n\nSend zc only links ubuf_info for requests coming from the same context.\nThere are some ambiguous syz reports, so let's check the assumption on\nnotification completion.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68317.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}