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CVE-2026-80826

Unknown

Last modified

CVE-2026-80826 is a vulnerability of currently unknown severity. 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..

Description

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

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < e4039e9bebb528dd9cd7ac72aeaec529c26c355a; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < ade18b4ce78a16558f4f435aece80082f6f7b64c; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < bb572801290e25ec1c4753d14af35777303f5d6b; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < 62cd519ab74cac499036cd88c11692f8f0d53e14; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < ff172092cba7ec990ecc7b610ce703e19570b8f0; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < 7983daa159981fac125db2457437723f38ea1472; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < f24dcc61bd0ecf7639fac5bf700450b398d793a7; >= e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d, < b1e24de475bf2d66fffc9103f3444b783527d55a
LinuxLinux2.6.26

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80826?
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.
How severe is CVE-2026-80826?
Severity scoring for CVE-2026-80826 is pending analysis.
How do I fix CVE-2026-80826?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST