Description
In the Linux kernel, the following vulnerability has been resolved: usbnet:fix NPE during rx_complete Missing usbnet_going_away Check in Critical Path. The usb_submit_urb function lacks a usbnet_going_away validation, whereas __usbnet_queue_skb includes this check. This inconsistency creates a race condition where: A URB request may succeed, but the corresponding SKB data fails to be queued. Subsequent processes: (e.g., rx_complete → defer_bh → __skb_unlink(skb, list)) attempt to access skb->next, triggering a NULL pointer dereference (Kernel Panic).
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/0c30988588b28393e3e8873d5654f910e86391ba Patch
- git.kernel.org/stable/c/0f10f83acfd619e13c64d6705908dfd792f19544 Patch
- git.kernel.org/stable/c/51de3600093429e3b712e5f091d767babc5dd6df Patch
- git.kernel.org/stable/c/95789c2f94fd29dce8759f9766baa333f749287c Patch
- git.kernel.org/stable/c/acacd48a37b52fc95f621765762c04152b58d642 Patch
- git.kernel.org/stable/c/d689645cd1594ea1d13cb0c404f8ad1011353e0e Patch
- git.kernel.org/stable/c/fd9ee3f0d6a53844f65efde581c91bbb0ff749ac Patch
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Metrics
- CVSS 3.1
-
4.7
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 9 · as of 7 November 2026
- CWE
- CWE-476
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