CVE-2026-63874

high

In the Linux kernel, the following vulnerability has been resolved: net: mctp: usb: fix race between urb completion and rx_retry cancellation It's possible t…

Vendor / product: Linux — linux kernel

In the Linux kernel, the following vulnerability has been resolved: net: mctp: usb: fix race between urb completion and rx_retry cancellation It's possible that sequencing between setting ->stopped and cancelling the rx_retry work (in ndo_stop) could leave us with an urb queued: T1: ndo_stop T2: rx_retry_work ------------ ---------------- LD: ->stopped => false ST: ->stopped rx_stopped, and cancelling pending work, we know that the requeue cannot occur, so all that's left is killing any pending urb.

CVSS

7.8

7.8 (CVSS v3.1)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Timeline (UTC)

Published: 2026-07-19 15:16

Modified: 2026-10-30 14:55

NVD status: Analyzed

Last synced 1 day ago

Verified against the source API 2026-10-30 15:11 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥6.15 <6.18.36, ≥6.19 <7.0.13, 7.1

Weakness classification (CWE)

CWE-362

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/54665dce982689e2fd99b32e9a0dcc204fda8a51

Patch / mitigation: https://git.kernel.org/stable/c/9c46f3ee1837f6881cb99a52ffecb2760f11dc73

Patch / mitigation: https://git.kernel.org/stable/c/d90feaa3f74bea8dafb6494631a194c70e547d94

References

https://git.kernel.org/stable/c/54665dce982689e2fd99b32e9a0dcc204fda8a51 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9c46f3ee1837f6881cb99a52ffecb2760f11dc73 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d90feaa3f74bea8dafb6494631a194c70e547d94 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-10-30 15:11 UTC · record ↗

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CVE-2026-63874

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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