can: vxcan: vxcan_xmit: fix use after free bug
After calling netif_rx_ni(skb), dereferencing skb is unsafe.
Especially, the canfd_frame cfd which aliases skb memory is accessed
after the netif_rx_ni().
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-34678 | In the Linux kernel, the following vulnerability has been resolved: can: vxcan: vxcan_xmit: fix use after free bug After calling netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the canfd_frame cfd which aliases skb memory is accessed after the netif_rx_ni(). |
Mon, 21 Apr 2025 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.11:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.11:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.11:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.11:rc4:*:*:*:*:*:* |
|
| Vendors & Products |
Linux
Linux linux Kernel |
Sat, 19 Apr 2025 01:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Metrics |
threat_severity
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threat_severity
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Thu, 17 Apr 2025 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-416 | |
| Metrics |
cvssV3_1
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Thu, 17 Apr 2025 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: can: vxcan: vxcan_xmit: fix use after free bug After calling netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the canfd_frame cfd which aliases skb memory is accessed after the netif_rx_ni(). | |
| Title | can: vxcan: vxcan_xmit: fix use after free bug | |
| References |
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-05-11T13:58:50.554Z
Reserved: 2025-04-16T07:16:05.752Z
Link: CVE-2021-47669
Updated: 2025-04-17T18:17:53.914Z
Status : Analyzed
Published: 2025-04-17T18:15:43.730
Modified: 2025-04-21T18:41:22.637
Link: CVE-2021-47669
OpenCVE Enrichment
No data.
EUVD