Use-after-free in Linux kernel - CVE-2023-52772

Vulnerability identifier: #VU90073

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-2023-52772

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 unix_stream_recv_urg() function in net/unix/af_unix.c. A local user can escalate privileges on the system.

Linux kernel
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Real Time Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
openSUSE Leap
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-livepatch-SLE15-SP6-RT_Update_0-debugsource
kernel-livepatch-6_4_0-150600_8-rt-debuginfo
kernel-livepatch-6_4_0-150600_8-rt
kernel-livepatch-6_4_0-150600_21-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_0-debugsource
kernel-livepatch-6_4_0-150600_21-default
kernel-syms-azure
kernel-azure-extra
kernel-source-azure
kernel-devel-azure
kernel-azure-vdso
kernel-azure-vdso-debuginfo
kernel-azure
kernel-azure-optional-debuginfo
kernel-azure-devel
reiserfs-kmp-azure
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
cluster-md-kmp-azure-debuginfo
kernel-azure-devel-debuginfo
gfs2-kmp-azure-debuginfo
kselftests-kmp-azure
kernel-azure-debugsource
reiserfs-kmp-azure-debuginfo
ocfs2-kmp-azure
kernel-azure-livepatch-devel
cluster-md-kmp-azure
kernel-rt-debugsource
dlm-kmp-rt-debuginfo
kernel-syms-rt
kernel-rt-optional
ocfs2-kmp-rt-debuginfo
kernel-devel-rt
kernel-source-rt
kernel-rt_debug
kernel-rt
cluster-md-kmp-rt
reiserfs-kmp-rt
kernel-rt_debug-livepatch-devel
kernel-rt-debuginfo
gfs2-kmp-rt
kernel-rt-extra-debuginfo
kernel-rt-vdso-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt_debug-debugsource
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_debug-devel
kernel-rt_debug-devel-debuginfo
ocfs2-kmp-rt
kselftests-kmp-rt
kernel-rt_debug-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt-livepatch-devel
kernel-rt-optional-debuginfo
dlm-kmp-rt
kernel-rt-extra

Install update from vendor's website.

Linux kernel - addressed in versions 5.15.140, 6.1.64, 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
kernel-livepatch-SLE15-SP6-RT_Update_0-debugsource - update to 2-150600.3.3.2
kernel-livepatch-6_4_0-150600_8-rt-debuginfo - update to 2-150600.3.3.2
kernel-livepatch-6_4_0-150600_8-rt - update to 2-150600.3.3.2
kernel-livepatch-6_4_0-150600_21-default-debuginfo - addressed in versions 3-150600.4.7.1, 4-150600.1.1
kernel-livepatch-SLE15-SP6_Update_0-debugsource - addressed in versions 3-150600.4.7.1, 4-150600.1.1
kernel-livepatch-6_4_0-150600_21-default - addressed in versions 3-150600.4.7.1, 4-150600.1.1
kernel-syms-azure - update to 6.4.0-150600.8.5.1
kernel-azure-extra - update to 6.4.0-150600.8.5.4
kernel-source-azure - update to 6.4.0-150600.8.5.4
kernel-devel-azure - update to 6.4.0-150600.8.5.4
kernel-azure-vdso - update to 6.4.0-150600.8.5.4
kernel-azure-vdso-debuginfo - update to 6.4.0-150600.8.5.4
kernel-azure - update to 6.4.0-150600.8.5.4
kernel-azure-optional-debuginfo - update to 6.4.0-150600.8.5.4
kernel-azure-devel - update to 6.4.0-150600.8.5.4
reiserfs-kmp-azure - 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
cluster-md-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
kselftests-kmp-azure - update to 6.4.0-150600.8.5.4
kernel-azure-debugsource - update to 6.4.0-150600.8.5.4
reiserfs-kmp-azure-debuginfo - update to 6.4.0-150600.8.5.4
ocfs2-kmp-azure - update to 6.4.0-150600.8.5.4
kernel-azure-livepatch-devel - update to 6.4.0-150600.8.5.4
cluster-md-kmp-azure - update to 6.4.0-150600.8.5.4
kernel-rt-debugsource - update to 6.4.0-150600.10.5.1
dlm-kmp-rt-debuginfo - 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
cluster-md-kmp-rt - update to 6.4.0-150600.10.5.1
reiserfs-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug-livepatch-devel - update to 6.4.0-150600.10.5.1
kernel-rt-debuginfo - update to 6.4.0-150600.10.5.1
gfs2-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt-extra-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt-vdso-debuginfo - update to 6.4.0-150600.10.5.1
reiserfs-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-debugsource - 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_debug-devel - 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-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-vdso-debuginfo - update to 6.4.0-150600.10.5.1
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

• https://git.kernel.org/stable/c/75bcfc188abf4fae9c1d5f5dc0a03540be602eef
• https://git.kernel.org/stable/c/d179189eec426fe4801e4b91efa1889faed12700
• https://git.kernel.org/stable/c/eae0b295ce16d8c8b4114c3037993191b4bb92f0
• https://git.kernel.org/stable/c/069a3ec329ff43e7869a3d94c62cd03203016bce
• https://git.kernel.org/stable/c/4b7b492615cf3017190f55444f7016812b66611d
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.140
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.64
• 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 unix
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel (Live Patch 0 for SLE 15 SP6)
• SUSE update for the Linux Kernel RT (Live Patch 0 for SLE 15 SP6)
• SUSE update for the Linux Kernel (Live Patch 0 for SLE 15 SP6)