CVE-2021-47670
published 2025-04-17CVE-2021-47670: In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb)…
PriorityP336high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.18%
7.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
can: peak_usb: fix use after free bugs
After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe.
Especially, the can_frame cf which aliases skb memory is accessed
after the peak_usb_netif_rx_ni().
Reordering the lines solves the issue.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.10.12-1 (bookworm) | linux 5.10.12-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 0a25e1f4f18566b750ebd3ae995af64e23111e63 < 5408824636fa0dfedb9ecb0d94abd573131bfbbe | 5408824636fa0dfedb9ecb0d94abd573131bfbbe |
| linux | linux | >= 0a25e1f4f18566b750ebd3ae995af64e23111e63 < ddd1416f44130377798c1430b76503513b7497c2 | ddd1416f44130377798c1430b76503513b7497c2 |
| linux | linux | >= 0a25e1f4f18566b750ebd3ae995af64e23111e63 < ec939c13c3fff2114479769c8380b7f1a54feca9 | ec939c13c3fff2114479769c8380b7f1a54feca9 |
| linux | linux | >= 0a25e1f4f18566b750ebd3ae995af64e23111e63 < 50aca891d7a554db0901b245167cd653d73aaa71 | 50aca891d7a554db0901b245167cd653d73aaa71 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.12-1 | 5.10.12-1 |
| linux | linux_kernel | >= 0 < 5.10.12-1 | 5.10.12-1 |
| linux | linux_kernel | >= 0 < 5.10.12-1 | 5.10.12-1 |
| linux | linux_kernel | >= 0 < 5.10.12-1 | 5.10.12-1 |
| linux | linux_kernel | >= 4.0 < 4.19.171 | 4.19.171 |
| linux | linux_kernel | >= 4.20 < 5.4.93 | 5.4.93 |
| linux | linux_kernel | >= 5.5 < 5.10.11 | 5.10.11 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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GHSA
GHSA-g3pp-67rc-cjg2: In the Linux kernel, the following vulnerability has been resolved:
can: peak_usb: fix use after free bugs
After calling peak_usb_netif_rx_ni(skb),
ghsa_unreviewed·2025-04-17
CVE-2021-47670 [HIGH] CWE-416 GHSA-g3pp-67rc-cjg2: In the Linux kernel, the following vulnerability has been resolved:
can: peak_usb: fix use after free bugs
After calling peak_usb_netif_rx_ni(skb),
In the Linux kernel, the following vulnerability has been resolved:
can: peak_usb: fix use after free bugs
After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe.
Especially, the can_frame cf which aliases skb memory is accessed
after the peak_usb_netif_rx_ni().
Reordering the lines solves the issue.
OSV
CVE-2021-47670: In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), de
osv·2025-04-17·CVSS 7.8
CVE-2021-47670 [HIGH] CVE-2021-47670: In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), de
In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni(). Reordering the lines solves the issue.
Red Hat
kernel: can: peak_usb: fix use after free bugs
vendor_redhat·2025-04-17·CVSS 7.8
CVE-2021-47670 [HIGH] CWE-416 kernel: can: peak_usb: fix use after free bugs
kernel: can: peak_usb: fix use after free bugs
In the Linux kernel, the following vulnerability has been resolved:
can: peak_usb: fix use after free bugs
After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe.
Especially, the can_frame cf which aliases skb memory is accessed
after the peak_usb_netif_rx_ni().
Reordering the lines solves the issue.
Statement: An unprivileged user with device access could potentially trigger a use-after-free vulnerability. However, this would require them to interact with the CAN device in a highly specific and difficult-to-automate manner to create the necessary conditions within the kernel driver.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red H
Debian
CVE-2021-47670: linux - In the Linux kernel, the following vulnerability has been resolved: can: peak_u...
vendor_debian·2021·CVSS 7.8
CVE-2021-47670 [HIGH] CVE-2021-47670: linux - In the Linux kernel, the following vulnerability has been resolved: can: peak_u...
In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni(). Reordering the lines solves the issue.
Scope: local
bookworm: resolved (fixed in 5.10.12-1)
bullseye: resolved (fixed in 5.10.12-1)
forky: resolved (fixed in 5.10.12-1)
sid: resolved (fixed in 5.10.12-1)
trixie: resolved (fixed in 5.10.12-1)
No detection rules found.
No public exploits indexed.
2025-04-17
Published