Bug 2265649 (CVE-2023-52450) - CVE-2023-52450 kernel: intel: Fix NULL pointer dereference issue in upi_fill_topology()
Summary: CVE-2023-52450 kernel: intel: Fix NULL pointer dereference issue in upi_fill_...
Keywords:
Status: NEW
Alias: CVE-2023-52450
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: 2292518
Blocks: 2265643
TreeView+ depends on / blocked
 
Reported: 2024-02-23 13:47 UTC by Patrick Del Bello
Modified: 2024-07-24 13:23 UTC (History)
49 users (show)

Fixed In Version:
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Doc Text:
A vulnerability was discovered in the Linux kernel in which certain CPU topologies could result in a null pointer dereference, affecting system stability.
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2024:4823 0 None None None 2024-07-24 13:11:06 UTC
Red Hat Product Errata RHSA-2024:4831 0 None None None 2024-07-24 13:23:14 UTC

Description Patrick Del Bello 2024-02-23 13:47:12 UTC 
perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology()

Get logical socket id instead of physical id in discover_upi_topology()
to avoid out-of-bound access on 'upi = &type->topology[nid][idx];' line
that leads to NULL pointer dereference in upi_fill_topology()
Comment 3 Alex 2024-06-09 15:22:28 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52450 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags WRITE OOB NULLPTR SIMPLEFIX LOG  ; these flags parsed automatically based on patche 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 4 Keith Grant 2024-06-15 18:25:06 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2292518]
Comment 7 errata-xmlrpc 2024-07-24 13:11:02 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 8 errata-xmlrpc 2024-07-24 13:23:11 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
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