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CVE-2026-80826

UnknownEPSS 0.19%

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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.19%

8.6th percentile

Probability of exploitation in the next 30 days. Learn more

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. The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
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