Critical 9.8Published Dec 16, 2025

CVE-2025-68192net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup

Updated under an hour ago (2026-10-19 07:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup Raw IP packets have no MAC header, leaving skb->mac_header uninitialized. This can trigger kernel panics on ARM64 when xfrm or other subsystems access the offset due to strict alignment checks. Initialize the MAC header to prevent such crashes. This can trigger kernel panics on ARM when running IPsec over the qmimux0 interface. Example trace: Internal error: Oops: 000000009600004f [#1] SMP CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.34-gbe78e49cb433 #1 Hardware name: LS1028A RDB Board (DT) pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : xfrm_input+0xde8/0x1318 lr : xfrm_input+0x61c/0x1318 sp : ffff800080003b20 Call trace: xfrm_input+0xde8/0x1318 xfrm6_rcv+0x38/0x44 xfrm6_esp_rcv+0x48/0xa8 ip6_protocol_deliver_rcu+0x94/0x4b0 ip6_input_finish+0x44/0x70 ip6_input+0x44/0xc0 ipv6_rcv+0x6c/0x114 __netif_receive_skb_one_core+0x5c/0x8c __netif_receive_skb+0x18/0x60 process_backlog+0x78/0x17c __napi_poll+0x38/0x180 net_rx_action+0x168/0x2f0

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c6adf77953bcec0ad63d7782479452464e50f7a3 before d693c47fb902b988f5752182e4f7fbde5e6dcaf9; from c6adf77953bcec0ad63d7782479452464e50f7a3 before 0aabccdcec1f4a36f95829ea2263f845bbc77223; from c6adf77953bcec0ad63d7782479452464e50f7a3 before 4e6b9004f01d0fef5b19778399bc5bf55f8c2d71; from c6adf77953bcec0ad63d7782479452464e50f7a3 before bf527b80b80a282ab5bf1540546211fc35e5cd42; from c6adf77953bcec0ad63d7782479452464e50f7a3 before dd03780c29f87c26c0e0bb7e0db528c8109461fb; from c6adf77953bcec0ad63d7782479452464e50f7a3 before ae811175cea35b03ac6d7c910f43a82a43b9c3b3; from c6adf77953bcec0ad63d7782479452464e50f7a3 before 8ab3b8f958d861a7f725a5be60769106509fbd69; from c6adf77953bcec0ad63d7782479452464e50f7a3 before e120f46768d98151ece8756ebd688b0e43dc8b29	CNA record

References

https://git.kernel.org/stable/c/d693c47fb902b988f5752182e4f7fbde5e6dcaf9
https://git.kernel.org/stable/c/0aabccdcec1f4a36f95829ea2263f845bbc77223
https://git.kernel.org/stable/c/4e6b9004f01d0fef5b19778399bc5bf55f8c2d71
https://git.kernel.org/stable/c/bf527b80b80a282ab5bf1540546211fc35e5cd42
https://git.kernel.org/stable/c/dd03780c29f87c26c0e0bb7e0db528c8109461fb
https://git.kernel.org/stable/c/ae811175cea35b03ac6d7c910f43a82a43b9c3b3
https://git.kernel.org/stable/c/8ab3b8f958d861a7f725a5be60769106509fbd69
https://git.kernel.org/stable/c/e120f46768d98151ece8756ebd688b0e43dc8b29

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.