CVE Intelligence
Unknown

CVE-2026-80826 — USB: c67x00: fix use-after-free in c67x00_add_iso_urb()

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.

Published Sep 4, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.2% (30-day exploitation probability)+1

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.2%
ahead of 9% of scored CVEs · Oct 27, 2026
Affects
Linux
Linux
CVSS base
—
Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Linux Linux ≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < e4039e9bebb528dd9cd7ac72aeaec529c26c355a≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < ade18b4ce78a16558f4f435aece80082f6f7b64c≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < bb572801290e25ec1c4753d14af35777303f5d6b≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < 62cd519ab74cac499036cd88c11692f8f0d53e14≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < ff172092cba7ec990ecc7b610ce703e19570b8f0≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < b4cb8081cf80f82e48fbe9c021a8f6d0fa2ed421≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < 7983daa159981fac125db2457437723f38ea1472≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < f24dcc61bd0ecf7639fac5bf700450b398d793a7
and 2 more ≥ e9b29ffc519b9e63d4e1c0b1278bb951bb418a9d and < b1e24de475bf2d66fffc9103f3444b783527d55aversion 2.6.26
Vulnerable CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 27, 2026 · 12 reading(s) · max 0.20%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Not enough vector or weakness data: use the affected application’s logs as a starting point.
application logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Record published
    Oct 15, 2026
  • Affected products added · linux/linux
    Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
  • Source status changed · → Received
    Oct 15, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 15, 2026 · NIST National Vulnerability Database
  • CVE published
    Sep 4, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

  • 1× References added · Oct 19, 2026 – Oct 19, 2026
  • 1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

11 on the record

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

  • CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 12h
  • CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 12h
  • CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 12h
  • CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 12h
  • CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 12h
  • CVE-2026-99210 accel/rocket: clear rdev on device init failure 12h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No CVSS score published by NVD, the CNA, CISA or GitHub so far.
  • No fixed version, patch or mitigation documented.
  • No CISA SSVC assessment.
  • No CWE classification.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-80826 is "USB: c67x00: fix use-after-free in c67x00_add_iso_urb()", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.20% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

Comments

Moderated technical discussion. Read the community guidelines.

No comments yet.

Sign in or create an account to comment and suggest corrections.