Bug 2298140 (CVE-2022-48804)

Summary: CVE-2022-48804 kernel: vt_ioctl: fix array_index_nospec in vt_setactivate
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 4.9.302, kernel 4.14.267, kernel 4.19.230, kernel 5.4.180, kernel 5.10.101, kernel 5.15.24, kernel 5.16.10, kernel 5.17 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel's vt_ioctl subsystem, where the vt_setactivate function can lead to a transient integer underflow due to improper handling of the vsa.console value. The vulnerability arises when an out-of-bounds value is decreased before being sanitized using array_index_nospec. This can potentially allow unauthorized access or manipulation of memory.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2024-07-16 12:29:03 UTC 
In the Linux kernel, the following vulnerability has been resolved:

vt_ioctl: fix array_index_nospec in vt_setactivate

array_index_nospec ensures that an out-of-bounds value is set to zero
on the transient path. Decreasing the value by one afterwards causes
a transient integer underflow. vsa.console should be decreased first
and then sanitized with array_index_nospec.

Kasper Acknowledgements: Jakob Koschel, Brian Johannesmeyer, Kaveh
Razavi, Herbert Bos, Cristiano Giuffrida from the VUSec group at VU
Amsterdam.
Comment 131 errata-xmlrpc 2024-09-24 00:39:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:7001 https://access.redhat.com/errata/RHSA-2024:7001
Comment 132 errata-xmlrpc 2024-09-24 02:34:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:7000 https://access.redhat.com/errata/RHSA-2024:7000
Comment 133 errata-xmlrpc 2024-11-12 09:36:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315
Comment 134 errata-xmlrpc 2024-12-04 00:46:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2024:10771 https://access.redhat.com/errata/RHSA-2024:10771