{"id":"CVE-2026-80826","title":"USB: c67x00: fix use-after-free in c67x00_add_iso_urb()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: c67x00: fix use-after-free in c67x00_add_iso_urb()\n\nWhen TD creation fails for the last packet of an isochronous URB,\nc67x00_add_iso_urb() gives the URB back befor…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < e4039e9bebb528dd9cd7ac72aeaec529c26c355a","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < ade18b4ce78a16558f4f435aece80082f6f7b64c","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < bb572801290e25ec1c4753d14af35777303f5d6b","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < 62cd519ab74cac499036cd88c11692f8f0d53e14","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < ff172092cba7ec990ecc7b610ce703e19570b8f0","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < 7983daa159981fac125db2457437723f38ea1472","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < f24dcc61bd0ecf7639fac5bf700450b398d793a7","Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < b1e24de475bf2d66fffc9103f3444b783527d55a","Linux 2.6.26"],"published":"2026-09-04","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:44:18.781Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80826","references":[{"url":"https://git.kernel.org/stable/c/e4039e9bebb528dd9cd7ac72aeaec529c26c355a"},{"url":"https://git.kernel.org/stable/c/ade18b4ce78a16558f4f435aece80082f6f7b64c"},{"url":"https://git.kernel.org/stable/c/bb572801290e25ec1c4753d14af35777303f5d6b"},{"url":"https://git.kernel.org/stable/c/62cd519ab74cac499036cd88c11692f8f0d53e14"},{"url":"https://git.kernel.org/stable/c/ff172092cba7ec990ecc7b610ce703e19570b8f0"},{"url":"https://git.kernel.org/stable/c/b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421"},{"url":"https://git.kernel.org/stable/c/7983daa159981fac125db2457437723f38ea1472"},{"url":"https://git.kernel.org/stable/c/f24dcc61bd0ecf7639fac5bf700450b398d793a7"},{"url":"https://git.kernel.org/stable/c/b1e24de475bf2d66fffc9103f3444b783527d55a"}],"tags":["cve.org"],"epss":0.00195,"epssPercentile":0.08588,"ingestedAt":"2026-10-19T09:16:01.503Z","slug":"CVE-2026-80826","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nUSB: c67x00: fix use-after-free in c67x00_add_iso_urb()\n\nWhen TD creation fails for the last packet of an isochronous URB,\nc67x00_add_iso_urb() gives the URB back before updating the endpoint\nscheduling state.\n\nc67x00_giveback_urb() frees the URB private data, and the completion\ncallback may release the final URB reference. The following accesses to\nurbp->ep_data, urb->interval, and urbp->cnt can therefore use freed\nmemory.\n\nUpdate next_frame and cnt before giving back the failed final packet,\nmaking the giveback the last operation that uses the URB and its private\ndata.\n\n## Affected\n\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < e4039e9bebb528dd9cd7ac72aeaec529c26c355a`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < ade18b4ce78a16558f4f435aece80082f6f7b64c`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < bb572801290e25ec1c4753d14af35777303f5d6b`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < 62cd519ab74cac499036cd88c11692f8f0d53e14`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < ff172092cba7ec990ecc7b610ce703e19570b8f0`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < 7983daa159981fac125db2457437723f38ea1472`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < f24dcc61bd0ecf7639fac5bf700450b398d793a7`\n- `Linux >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < b1e24de475bf2d66fffc9103f3444b783527d55a`\n- `Linux 2.6.26`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}