Bug 2360786 (CVE-2021-47670) - CVE-2021-47670 kernel: can: peak_usb: fix use after free bugs
Summary: CVE-2021-47670 kernel: can: peak_usb: fix use after free bugs
Keywords:
Status: NEW
Alias: CVE-2021-47670
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-04-17 19:01 UTC by OSIDB Bzimport
Modified: 2025-10-07 10:44 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2025:13889 0 None None None 2025-08-14 11:49:33 UTC
Red Hat Product Errata RHSA-2025:13589 0 None None None 2025-08-11 09:45:19 UTC
Red Hat Product Errata RHSA-2025:13590 0 None None None 2025-08-11 09:39:33 UTC
Red Hat Product Errata RHSA-2025:14136 0 None None None 2025-08-20 08:08:31 UTC
Red Hat Product Errata RHSA-2025:14511 0 None None None 2025-08-25 14:13:40 UTC
Red Hat Product Errata RHSA-2025:14692 0 None None None 2025-08-27 00:23:11 UTC
Red Hat Product Errata RHSA-2025:15035 0 None None None 2025-09-02 06:52:52 UTC

Description OSIDB Bzimport 2025-04-17 19:01:43 UTC 
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.
Comment 1 Avinash Hanwate 2025-04-18 03:49:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025041734-CVE-2021-47670-2b77@gregkh/T
Comment 4 errata-xmlrpc 2025-08-11 09:39:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:13590 https://access.redhat.com/errata/RHSA-2025:13590
Comment 5 errata-xmlrpc 2025-08-11 09:45:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:13589 https://access.redhat.com/errata/RHSA-2025:13589
Comment 6 errata-xmlrpc 2025-08-20 08:08:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2025:14136 https://access.redhat.com/errata/RHSA-2025:14136
Comment 7 errata-xmlrpc 2025-08-25 14:13:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2025:14511 https://access.redhat.com/errata/RHSA-2025:14511
Comment 8 errata-xmlrpc 2025-08-27 00:23:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2025:14692 https://access.redhat.com/errata/RHSA-2025:14692
Comment 9 errata-xmlrpc 2025-09-02 06:52:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2025:15035 https://access.redhat.com/errata/RHSA-2025:15035
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