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CVE-2026-80826

USB: c67x00: fix use-after-free in c67x00_add_iso_urb() PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: USB: c67x00: fix use-after-free in c67x00_add_iso_urb() When TD creation fails for the last packet of an isochronous URB, c67x00_add_iso_urb() gives the URB back before updating the endpoint scheduling state. c67x00_giveback_urb() frees the URB private data, and the completion callback may release the final URB reference. The following accesses to urbp->ep_data, urb->interval, and urbp->cnt can therefore use freed memory. Update next_frame and cnt before giving back the failed final packet, making the giveback the last operation that uses the URB and its private data.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before e4039e9bebb528dd9cd7ac72aeaec529c26c355a; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before ade18b4ce78a16558f4f435aece80082f6f7b64c; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before bb572801290e25ec1c4753d14af35777303f5d6b; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before 62cd519ab74cac499036cd88c11692f8f0d53e14; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before ff172092cba7ec990ecc7b610ce703e19570b8f0; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before 7983daa159981fac125db2457437723f38ea1472; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before f24dcc61bd0ecf7639fac5bf700450b398d793a7; affected e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d before b1e24de475bf2d66fffc9103f3444b783527d55a
Linux / Linuxaffected 2.6.26; unaffected 0 before 2.6.26; unaffected 5.10.269 through 5.10.*; unaffected 5.15.220 through 5.15.*; unaffected 6.1.187 through 6.1.*; unaffected 6.6.156 through 6.6.*; unaffected 6.12.108 through 6.12.*; unaffected 6.18.49 through 6.18.*; unaffected 7.1.13 through 7.1.*; unaffected 7.2.3 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References