CVE-2025-22050
Published: April 18, 2025Last modified: April 18, 2025
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).
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.7 |
| Attack Vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.134-r0) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.12.41-r0) |
References
- https://git.kernel.org/stable/c/0c30988588b28393e3e8873d5654f910e86391ba
- https://git.kernel.org/stable/c/0f10f83acfd619e13c64d6705908dfd792f19544
- https://git.kernel.org/stable/c/51de3600093429e3b712e5f091d767babc5dd6df
- https://git.kernel.org/stable/c/95789c2f94fd29dce8759f9766baa333f749287c
- https://git.kernel.org/stable/c/acacd48a37b52fc95f621765762c04152b58d642
- https://git.kernel.org/stable/c/d689645cd1594ea1d13cb0c404f8ad1011353e0e
- https://git.kernel.org/stable/c/fd9ee3f0d6a53844f65efde581c91bbb0ff749ac
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html