Use-after-free in Linux kernel - CVE-2023-52771

Vulnerability identifier: #VU90066

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-52771

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the grandparent() function in drivers/cxl/core/port.c. A local user can escalate privileges on the system.

Linux kernel
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Public Cloud Module
openSUSE Leap
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-livepatch-SLE15-SP6-RT_Update_1-debugsource
kernel-livepatch-6_4_0-150600_10_5-rt
kernel-livepatch-6_4_0-150600_10_5-rt-debuginfo
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-syms-azure
kselftests-kmp-azure
kernel-azure-extra
kernel-azure-optional-debuginfo
kernel-azure
kernel-azure-vdso-debuginfo
kernel-azure-vdso
kernel-devel-azure
kernel-source-azure
reiserfs-kmp-azure
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-azure-extra-debuginfo
dlm-kmp-azure-debuginfo
dlm-kmp-azure
kernel-azure-optional
ocfs2-kmp-azure-debuginfo
gfs2-kmp-azure
kselftests-kmp-azure-debuginfo
kernel-azure-devel-debuginfo
gfs2-kmp-azure-debuginfo
cluster-md-kmp-azure
kernel-azure-livepatch-devel
ocfs2-kmp-azure
reiserfs-kmp-azure-debuginfo
kernel-azure-devel
cluster-md-kmp-azure-debuginfo
kernel-rt-livepatch-devel
kernel-rt-optional-debuginfo
dlm-kmp-rt
kernel-rt-extra
dlm-kmp-rt-debuginfo
kernel-rt-debugsource
kernel-syms-rt
kernel-rt-optional
ocfs2-kmp-rt-debuginfo
kernel-devel-rt
kernel-source-rt
kernel-rt_debug
kernel-rt
kernel-rt_debug-debugsource
kernel-rt_debug-debuginfo
kernel-rt-extra-debuginfo
gfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt_debug-livepatch-devel
reiserfs-kmp-rt
cluster-md-kmp-rt
kernel-rt_debug-devel
reiserfs-kmp-rt-debuginfo
cluster-md-kmp-rt-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt_debug-vdso
kernel-rt-vdso
kernel-rt-devel-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt-devel
kernel-rt-vdso-debuginfo
kernel-rt_debug-devel-debuginfo
ocfs2-kmp-rt
kselftests-kmp-rt
kernel-rt_debug-vdso-debuginfo
Red Hat OpenShift Container Platform
OpenShift Virtualization
IBM Security Guardium

Install update from vendor's website.

Linux kernel - addressed in versions 6.5.13, 6.6.3, 6.7
kernel-livepatch-SLE15-SP6-RT_Update_1-debugsource - update to 1-150600.1.5.1
kernel-livepatch-6_4_0-150600_10_5-rt - update to 1-150600.1.5.1
kernel-livepatch-6_4_0-150600_10_5-rt-debuginfo - update to 1-150600.1.5.1
Red Hat OpenShift Container Platform - addressed in versions 4.13.48, 4.14.35, 4.15.28
OpenShift Virtualization - update to 4.15.5
kernel (Red Hat package) - addressed in versions 5.14.0-284.79.1.el9_2, 5.14.0-427.33.1.el9_4
kernel-rt (Red Hat package) - update to 5.14.0-284.79.1.rt14.364.el9_2
kernel-syms-azure - update to 6.4.0-150600.8.5.1
kselftests-kmp-azure - update to 6.4.0-150600.8.5.4
kernel-azure-extra - update to 6.4.0-150600.8.5.4
kernel-azure-optional-debuginfo - update to 6.4.0-150600.8.5.4
kernel-azure - update to 6.4.0-150600.8.5.4
kernel-azure-vdso-debuginfo - update to 6.4.0-150600.8.5.4
kernel-azure-vdso - update to 6.4.0-150600.8.5.4
kernel-devel-azure - update to 6.4.0-150600.8.5.4
kernel-source-azure - update to 6.4.0-150600.8.5.4
reiserfs-kmp-azure - update to 6.4.0-150600.8.5.4
kernel-azure-debugsource - update to 6.4.0-150600.8.5.4
kernel-azure-debuginfo - update to 6.4.0-150600.8.5.4
kernel-azure-extra-debuginfo - update to 6.4.0-150600.8.5.4
dlm-kmp-azure-debuginfo - update to 6.4.0-150600.8.5.4
dlm-kmp-azure - update to 6.4.0-150600.8.5.4
kernel-azure-optional - update to 6.4.0-150600.8.5.4
ocfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.5.4
gfs2-kmp-azure - update to 6.4.0-150600.8.5.4
kselftests-kmp-azure-debuginfo - update to 6.4.0-150600.8.5.4
kernel-azure-devel-debuginfo - update to 6.4.0-150600.8.5.4
gfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.5.4
cluster-md-kmp-azure - update to 6.4.0-150600.8.5.4
kernel-azure-livepatch-devel - update to 6.4.0-150600.8.5.4
ocfs2-kmp-azure - update to 6.4.0-150600.8.5.4
reiserfs-kmp-azure-debuginfo - update to 6.4.0-150600.8.5.4
kernel-azure-devel - update to 6.4.0-150600.8.5.4
cluster-md-kmp-azure-debuginfo - update to 6.4.0-150600.8.5.4
kernel-rt-livepatch-devel - update to 6.4.0-150600.10.5.1
kernel-rt-optional-debuginfo - update to 6.4.0-150600.10.5.1
dlm-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt-extra - update to 6.4.0-150600.10.5.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt-debugsource - update to 6.4.0-150600.10.5.1
kernel-syms-rt - update to 6.4.0-150600.10.5.1
kernel-rt-optional - update to 6.4.0-150600.10.5.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-devel-rt - update to 6.4.0-150600.10.5.1
kernel-source-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug - update to 6.4.0-150600.10.5.1
kernel-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug-debugsource - update to 6.4.0-150600.10.5.1
kernel-rt_debug-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt-extra-debuginfo - update to 6.4.0-150600.10.5.1
gfs2-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-livepatch-devel - update to 6.4.0-150600.10.5.1
reiserfs-kmp-rt - update to 6.4.0-150600.10.5.1
cluster-md-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug-devel - update to 6.4.0-150600.10.5.1
reiserfs-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kselftests-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-vdso - update to 6.4.0-150600.10.5.1
kernel-rt-vdso - update to 6.4.0-150600.10.5.1
kernel-rt-devel-debuginfo - update to 6.4.0-150600.10.5.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt-devel - update to 6.4.0-150600.10.5.1
kernel-rt-vdso-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-devel-debuginfo - update to 6.4.0-150600.10.5.1
ocfs2-kmp-rt - update to 6.4.0-150600.10.5.1
kselftests-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug-vdso-debuginfo - update to 6.4.0-150600.10.5.1
IBM Security Guardium - addressed in versions 12.0p31, 12.0p106

• https://git.kernel.org/stable/c/37179fcc916bce8c3cc7b36d67ef814cce55142b
• https://git.kernel.org/stable/c/6b2e428e673b3f55965674a426c40922e91388aa
• https://git.kernel.org/stable/c/8d2ad999ca3c64cb08cf6a58d227b9d9e746d708
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.13
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.3
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7

• Use-after-free in Linux kernel cxl core driver
• SUSE update for the Linux Kernel
• Red Hat Enterprise Linux 9 update for kernel
• Red Hat Enterprise Linux 9 update for kernel-rt
• SUSE update for the Linux Kernel
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.14
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.15
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.13
• Red Hat Enterprise Linux 9 update for kernel
• Multiple vulnerabilities in OpenShift Virtualization 4.15
• Multiple vulnerabilities in IBM Security Guardium