CVE-2026-80826

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < e4039e9bebb528dd9cd7ac72aeaec529c26c355aaffected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < ade18b4ce78a16558f4f435aece80082f6f7b64caffected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < bb572801290e25ec1c4753d14af35777303f5d6baffected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < 62cd519ab74cac499036cd88c11692f8f0d53e14affected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < ff172092cba7ec990ecc7b610ce703e19570b8f0affected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421affected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < 7983daa159981fac125db2457437723f38ea1472affected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < f24dcc61bd0ecf7639fac5bf700450b398d793a7affected
LinuxLinuxe9b29ffc519b9e63d4e1c0b1278bb951bb418a9d < b1e24de475bf2d66fffc9103f3444b783527d55aaffected
LinuxLinux2.6.26affected
LinuxLinux0 < 2.6.26unaffected
LinuxLinux5.10.269 <= 5.10.*unaffected
LinuxLinux5.15.220 <= 5.15.*unaffected
LinuxLinux6.1.187 <= 6.1.*unaffected
LinuxLinux6.6.156 <= 6.6.*unaffected
LinuxLinux6.12.108 <= 6.12.*unaffected
LinuxLinux6.18.49 <= 6.18.*unaffected
LinuxLinux7.1.13 <= 7.1.*unaffected
LinuxLinux7.2.3 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References