SUSE: CVE-2021-47604: SUSE Linux Security Advisory

SUSE: CVE-2021-47604: SUSE Linux Security Advisory

Severity

6

CVSS

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

Published

06/19/2024

Created

08/16/2024

Added

08/09/2024

Modified

01/28/2025

Description

In the Linux kernel, the following vulnerability has been resolved: vduse: check that offset is within bounds in get_config() This condition checks "len" but it does not check "offset" and that could result in an out of bounds read if "offset > dev->config_size". The problem is that since both variables are unsigned the "dev->config_size - offset" subtraction would result in a very high unsigned value. I think these checks might not be necessary because "len" and "offset" are supposed to already have been validated using the vhost_vdpa_config_validate() function.But I do not know the code perfectly, and I like to be safe.

Solution(s)

• suse-upgrade-cluster-md-kmp-azure
• suse-upgrade-cluster-md-kmp-rt
• suse-upgrade-dlm-kmp-azure
• suse-upgrade-dlm-kmp-rt
• suse-upgrade-gfs2-kmp-azure
• suse-upgrade-gfs2-kmp-rt
• suse-upgrade-kernel-azure
• suse-upgrade-kernel-azure-devel
• suse-upgrade-kernel-azure-extra
• suse-upgrade-kernel-azure-livepatch-devel
• suse-upgrade-kernel-azure-optional
• suse-upgrade-kernel-azure-vdso
• suse-upgrade-kernel-devel-azure
• suse-upgrade-kernel-devel-rt
• suse-upgrade-kernel-rt
• suse-upgrade-kernel-rt-devel
• suse-upgrade-kernel-rt-extra
• suse-upgrade-kernel-rt-livepatch
• suse-upgrade-kernel-rt-livepatch-devel
• suse-upgrade-kernel-rt-optional
• suse-upgrade-kernel-rt-vdso
• suse-upgrade-kernel-rt_debug
• suse-upgrade-kernel-rt_debug-devel
• suse-upgrade-kernel-rt_debug-livepatch-devel
• suse-upgrade-kernel-rt_debug-vdso
• suse-upgrade-kernel-source-azure
• suse-upgrade-kernel-source-rt
• suse-upgrade-kernel-syms-azure
• suse-upgrade-kernel-syms-rt
• suse-upgrade-kselftests-kmp-azure
• suse-upgrade-kselftests-kmp-rt
• suse-upgrade-ocfs2-kmp-azure
• suse-upgrade-ocfs2-kmp-rt
• suse-upgrade-reiserfs-kmp-azure
• suse-upgrade-reiserfs-kmp-rt

References

• https://attackerkb.com/topics/cve-2021-47604
• CVE - 2021-47604