Paper/Archive/CVE-2025-68192

CVE-2025-68192

Linux Linux — net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup

CVSS 9.8 (CNA)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 49.1.491 × 209.8 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

Affected

ProductAffectedFixed inSource

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < d693c47fb902b988f5752182e4f7fbde5e6dcaf9d693c47fb902b988f5752182e4f7fbde5e6dcaf9CNA

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < 0aabccdcec1f4a36f95829ea2263f845bbc772230aabccdcec1f4a36f95829ea2263f845bbc77223CNA

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < 4e6b9004f01d0fef5b19778399bc5bf55f8c2d714e6b9004f01d0fef5b19778399bc5bf55f8c2d71CNA

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < bf527b80b80a282ab5bf1540546211fc35e5cd42bf527b80b80a282ab5bf1540546211fc35e5cd42CNA

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < dd03780c29f87c26c0e0bb7e0db528c8109461fbdd03780c29f87c26c0e0bb7e0db528c8109461fbCNA

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < ae811175cea35b03ac6d7c910f43a82a43b9c3b3ae811175cea35b03ac6d7c910f43a82a43b9c3b3CNA

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < 8ab3b8f958d861a7f725a5be60769106509fbd698ab3b8f958d861a7f725a5be60769106509fbd69CNA

Linuxc6adf77953bcec0ad63d7782479452464e50f7a3 – < e120f46768d98151ece8756ebd688b0e43dc8b29e120f46768d98151ece8756ebd688b0e43dc8b29CNA

Linux4.12–CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

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