vulnerability

Red Hat: CVE-2022-48804: kernel: vt_ioctl: fix array_index_nospec in vt_setactivate (Multiple Advisories)

Name: Red Hat: CVE-2022-48804: kernel: vt_ioctl: fix array_index_nospec in vt_setactivate (Multiple Advisories)
Creator: Red Hat
Published: 2024-07-16T00:00:00.000Z
Keywords: CVE, CWE-191, Red Hat, 2022, 48804, kernel, redhat-upgrade-kernel, redhat-upgrade-kernel-rt, Severity 6

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Severity

CVSS

(AV:L/AC:L/Au:S/C:C/I:N/A:C)

Published

Jul 16, 2024

Added

Sep 25, 2024

Modified

Mar 27, 2026

Description

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.

Solutions

redhat-upgrade-kernelredhat-upgrade-kernel-rt

References

Rapid7 Labs

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