Bug 2282898 (CVE-2021-47459) - CVE-2021-47459 kernel: can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv
Summary: CVE-2021-47459 kernel: can: j1939: j1939_netdev_start(): fix UAF for rx_kref ...
Keywords:
Status: NEW
Alias: CVE-2021-47459
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2283370
TreeView+ depends on / blocked
 
Reported: 2024-05-23 09:37 UTC by ybuenos
Modified: 2024-08-15 07:43 UTC (History)
50 users (show)

Fixed In Version: kernel 5.4.156, kernel 5.10.76, kernel 5.14.15, kernel 5.15
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2024:5114 0 None None None 2024-08-08 07:41:30 UTC
Red Hat Product Errata RHBA-2024:5450 0 None None None 2024-08-15 07:43:58 UTC
Red Hat Product Errata RHSA-2024:4823 0 None None None 2024-07-24 13:12:29 UTC
Red Hat Product Errata RHSA-2024:4831 0 None None None 2024-07-24 13:24:33 UTC
Red Hat Product Errata RHSA-2024:4928 0 None None None 2024-07-31 00:40:48 UTC

Description ybuenos 2024-05-23 09:37:37 UTC 
In the Linux kernel, the following vulnerability has been resolved:

can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv

The Linux kernel CVE team has assigned CVE-2021-47459 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052224-CVE-2021-47459-4f79@gregkh/T
Comment 2 Alex 2024-06-09 16:07:53 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47459 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is an approximation based on flags LOCK UAF  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.
Comment 11 errata-xmlrpc 2024-07-24 13:12:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:4823 https://access.redhat.com/errata/RHSA-2024:4823
Comment 12 errata-xmlrpc 2024-07-24 13:24:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:4831 https://access.redhat.com/errata/RHSA-2024:4831
Comment 13 errata-xmlrpc 2024-07-31 00:40:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:4928 https://access.redhat.com/errata/RHSA-2024:4928
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