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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未初始化MAC头偏移量，可能导致内核崩溃。

CVSS 9.8 · Critical EPSS 0.61% · P49

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c6adf77953bcec0ad63d7782479452464e50f7a3< d693c47fb902b988f5752182e4f7fbde5e6dcaf9 affected
c6adf77953bcec0ad63d7782479452464e50f7a3< 0aabccdcec1f4a36f95829ea2263f845bbc77223 affected
c6adf77953bcec0ad63d7782479452464e50f7a3< 4e6b9004f01d0fef5b19778399bc5bf55f8c2d71 affected
c6adf77953bcec0ad63d7782479452464e50f7a3< bf527b80b80a282ab5bf1540546211fc35e5cd42 affected
c6adf77953bcec0ad63d7782479452464e50f7a3< dd03780c29f87c26c0e0bb7e0db528c8109461fb affected
c6adf77953bcec0ad63d7782479452464e50f7a3< ae811175cea35b03ac6d7c910f43a82a43b9c3b3 affected
c6adf77953bcec0ad63d7782479452464e50f7a3< 8ab3b8f958d861a7f725a5be60769106509fbd69 affected
c6adf77953bcec0ad63d7782479452464e50f7a3< e120f46768d98151ece8756ebd688b0e43dc8b29 affected
… +10 more rows
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I. Basic Information for CVE-2025-68192

Vulnerability Information
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Vulnerability Title
net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未初始化MAC头偏移量，可能导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c6adf77953bcec0ad63d7782479452464e50f7a3 ~ d693c47fb902b988f5752182e4f7fbde5e6dcaf9 -
Linux Linux 4.12 -

II. Public POCs for CVE-2025-68192

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III. Intelligence Information for CVE-2025-68192

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Other References for CVE-2025-68192 (8)

Same Patch Batch · Linux · 2025-12-16 · 156 CVEs total

CVE-2025-68301 9.8 CRITICAL net: atlantic: fix fragment overflow handling in RX path
CVE-2025-68263 9.8 CRITICAL ksmbd: ipc: fix use-after-free in ipc_msg_send_request
CVE-2025-68315 9.8 CRITICAL f2fs: fix to detect potential corrupted nid in free_nid_list
CVE-2025-68285 9.8 CRITICAL libceph: fix potential use-after-free in have_mon_and_osd_map()
CVE-2025-40350 9.8 CRITICAL net/mlx5e: RX, Fix generating skb from non-linear xdp_buff for striding RQ
CVE-2025-68284 9.8 CRITICAL libceph: prevent potential out-of-bounds writes in handle_auth_session_key()
CVE-2025-68304 8.8 HIGH Bluetooth: hci_core: lookup hci_conn on RX path on protocol side
CVE-2025-68256 8.8 HIGH staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
CVE-2025-68255 8.8 HIGH staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing
CVE-2025-68226 8.8 HIGH smb: client: fix incomplete backport in cfids_invalidation_worker()
CVE-2025-40362 8.8 HIGH ceph: fix multifs mds auth caps issue
CVE-2025-68314 8.8 HIGH drm/msm: make sure last_fence is always updated
CVE-2025-68250 8.2 HIGH hung_task: fix warnings caused by unaligned lock pointers
CVE-2025-68170 7.8 HIGH drm/radeon: Do not kfree() devres managed rdev
CVE-2025-68174 7.8 HIGH amd/amdkfd: enhance kfd process check in switch partition
CVE-2025-68175 7.8 HIGH media: nxp: imx8-isi: Fix streaming cleanup on release
CVE-2025-68294 7.8 HIGH io_uring/net: ensure vectored buffer node import is tied to notification
CVE-2025-68303 7.8 HIGH platform/x86: intel: punit_ipc: fix memory corruption
CVE-2025-68234 7.8 HIGH io_uring/cmd_net: fix wrong argument types for skb_queue_splice()
CVE-2025-68183 7.8 HIGH ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68192

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