Bug 2168297 (CVE-2023-23454) - CVE-2023-23454 kernel: slab-out-of-bounds read vulnerabilities in cbq_classify
Summary: CVE-2023-23454 kernel: slab-out-of-bounds read vulnerabilities in cbq_classify
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2023-23454
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: 2168325 2168326 2168327 2168328
Blocks: 2160440
TreeView+ depends on / blocked
 
Reported: 2023-02-08 17:04 UTC by Rohit Keshri
Modified: 2023-05-16 23:12 UTC (History)
38 users (show)

Fixed In Version: kernel 6.2-rc3
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds (OOB) read problem was found in cbq_classify in net/sched/sch_cbq.c in the Linux kernel. This issue may allow a local attacker to cause a denial of service due to type confusion. Non-negative numbers could indicate a TC_ACT_SHOT condition rather than valid classification results.
Clone Of:
Environment:
Last Closed: 2023-05-16 23:12:49 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:2736 0 None None None 2023-05-16 08:06:18 UTC
Red Hat Product Errata RHSA-2023:2951 0 None None None 2023-05-16 08:35:02 UTC

Description Rohit Keshri 2023-02-08 17:04:04 UTC 
An out-of-bounds (OOB) read problem was found in cbq_classify in net/sched/sch_cbq.c in the Linux kernel. This flaw allows a local attacker to cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caa4b35b4317d5147b3ab0fbdc9c075c7d2e9c12
Comment 7 errata-xmlrpc 2023-05-16 08:06:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2736 https://access.redhat.com/errata/RHSA-2023:2736
Comment 8 errata-xmlrpc 2023-05-16 08:34:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2951 https://access.redhat.com/errata/RHSA-2023:2951
Comment 9 Product Security DevOps Team 2023-05-16 23:12:45 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-2023-23454
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