Bug 2133490 (CVE-2022-3435) - CVE-2022-3435 kernel: out-of-bounds read in fib_nh_match of the file net/ipv4/fib_semantics.c
Summary: CVE-2022-3435 kernel: out-of-bounds read in fib_nh_match of the file net/ipv4...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-3435
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2133491 2134815 2137369 2137370 2137371 2137372
Blocks: 2133492
TreeView+ depends on / blocked
 
Reported: 2022-10-10 15:31 UTC by Marian Rehak
Modified: 2023-05-12 20:11 UTC (History)
52 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds memory read flaw was found in the Linux kernel. The IPv4 Handler component may delete IPv4 routes containing a multipath spec while the fib_info is using a nexthop object. This issue allows a local attacker access to unauthorized data.
Clone Of:
Environment:
Last Closed: 2023-05-09 16:56:28 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:2148 0 None None None 2023-05-09 07:11:49 UTC
Red Hat Product Errata RHSA-2023:2458 0 None None None 2023-05-09 07:50:52 UTC

Description Marian Rehak 2022-10-10 15:31:48 UTC 
This affects the function fib_nh_match of the file net/ipv4/fib_semantics.c of the component IPv4 Handler. The manipulation leads to out-of-bounds read. It is possible to initiate the attack remotely.

Reference:

https://vuldb.com/?id.210357
https://lore.kernel.org/netdev/20221005181257.8897-1-dsahern@kernel.org/T/#u
Comment 1 Marian Rehak 2022-10-10 15:32:15 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2133491]
Comment 11 errata-xmlrpc 2023-05-09 07:11:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2148 https://access.redhat.com/errata/RHSA-2023:2148
Comment 12 errata-xmlrpc 2023-05-09 07:50:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2458 https://access.redhat.com/errata/RHSA-2023:2458
Comment 13 Product Security DevOps Team 2023-05-09 16:56:23 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-3435
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