Memory leak in Linux kernel - CVE-2021-47249

Vulnerability identifier: #VU89950

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-47249

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the rds_recvmsg() function in net/rds/recv.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Real Time 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Live Patching
SUSE Linux Enterprise Workstation Extension 12
openEuler
kgraft-patch-4_12_14-122_219-default
gfs2-kmp-rt
gfs2-kmp-rt-debuginfo
kernel-rt-devel
kernel-rt-debugsource
kernel-rt_debug-debugsource
cluster-md-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt_debug-devel-debuginfo
kernel-syms-rt
kernel-rt
kernel-rt_debug
ocfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-base
kernel-rt-base-debuginfo
ocfs2-kmp-rt
dlm-kmp-rt
kernel-rt_debug-debuginfo
kernel-rt_debug-devel
kernel-devel-rt
kernel-source-rt
kernel-devel-azure
kernel-azure-debugsource
kernel-azure-base-debuginfo
kernel-azure-devel
kernel-azure-debuginfo
kernel-syms-azure
kernel-azure-base
kernel-azure
kernel-source-azure
kernel-default-base
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-devel
dlm-kmp-default
kernel-default-debugsource
cluster-md-kmp-default
kernel-syms
dlm-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-base-debuginfo
kernel-default-debuginfo
gfs2-kmp-default
kernel-default
kernel-macros
kernel-source
kernel-devel
kernel-default-devel-debuginfo
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-docs
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-man
kernel-default-extra-debuginfo
kernel-default-extra
python3-perf
bpftool-debuginfo
kernel-debuginfo
python2-perf
kernel-debugsource
kernel-tools-debuginfo
python3-perf-debuginfo
perf-debuginfo
kernel-tools-devel
perf
kernel-tools
python2-perf-debuginfo
bpftool
kernel
Dell Secure Connect Gateway

Install update from vendor's website.

Linux kernel - addressed in versions 4.4.274, 4.9.274, 4.14.238, 4.19.196, 5.4.128, 5.10.46, 5.12.13, 5.13
kgraft-patch-4_12_14-122_219-default - update to 1-8.3.1
gfs2-kmp-rt - update to 4.12.14-10.188.1
gfs2-kmp-rt-debuginfo - update to 4.12.14-10.188.1
kernel-rt-devel - update to 4.12.14-10.188.1
kernel-rt-debugsource - update to 4.12.14-10.188.1
kernel-rt_debug-debugsource - update to 4.12.14-10.188.1
cluster-md-kmp-rt-debuginfo - update to 4.12.14-10.188.1
dlm-kmp-rt-debuginfo - update to 4.12.14-10.188.1
cluster-md-kmp-rt - update to 4.12.14-10.188.1
kernel-rt_debug-devel-debuginfo - update to 4.12.14-10.188.1
kernel-syms-rt - update to 4.12.14-10.188.1
kernel-rt - update to 4.12.14-10.188.1
kernel-rt_debug - update to 4.12.14-10.188.1
ocfs2-kmp-rt-debuginfo - update to 4.12.14-10.188.1
kernel-rt-debuginfo - update to 4.12.14-10.188.1
kernel-rt-devel-debuginfo - update to 4.12.14-10.188.1
kernel-rt-base - update to 4.12.14-10.188.1
kernel-rt-base-debuginfo - update to 4.12.14-10.188.1
ocfs2-kmp-rt - update to 4.12.14-10.188.1
dlm-kmp-rt - update to 4.12.14-10.188.1
kernel-rt_debug-debuginfo - update to 4.12.14-10.188.1
kernel-rt_debug-devel - update to 4.12.14-10.188.1
kernel-devel-rt - update to 4.12.14-10.188.1
kernel-source-rt - update to 4.12.14-10.188.1
kernel-devel-azure - update to 4.12.14-16.188.1
kernel-azure-debugsource - update to 4.12.14-16.188.1
kernel-azure-base-debuginfo - update to 4.12.14-16.188.1
kernel-azure-devel - update to 4.12.14-16.188.1
kernel-azure-debuginfo - update to 4.12.14-16.188.1
kernel-syms-azure - update to 4.12.14-16.188.1
kernel-azure-base - update to 4.12.14-16.188.1
kernel-azure - update to 4.12.14-16.188.1
kernel-source-azure - update to 4.12.14-16.188.1
kernel-default-base - update to 4.12.14-122.219.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.219.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.219.1
kernel-default-devel - update to 4.12.14-122.219.1
dlm-kmp-default - update to 4.12.14-122.219.1
kernel-default-debugsource - update to 4.12.14-122.219.1
cluster-md-kmp-default - update to 4.12.14-122.219.1
kernel-syms - update to 4.12.14-122.219.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.219.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.219.1
ocfs2-kmp-default - update to 4.12.14-122.219.1
kernel-default-base-debuginfo - update to 4.12.14-122.219.1
kernel-default-debuginfo - update to 4.12.14-122.219.1
gfs2-kmp-default - update to 4.12.14-122.219.1
kernel-default - update to 4.12.14-122.219.1
kernel-macros - update to 4.12.14-122.219.1
kernel-source - update to 4.12.14-122.219.1
kernel-devel - update to 4.12.14-122.219.1
kernel-default-devel-debuginfo - update to 4.12.14-122.219.1
kernel-default-kgraft - update to 4.12.14-122.219.1
kernel-default-kgraft-devel - update to 4.12.14-122.219.1
kernel-docs - update to 4.12.14-122.219.1
kernel-obs-build - update to 4.12.14-122.219.1
kernel-obs-build-debugsource - update to 4.12.14-122.219.1
kernel-default-man - update to 4.12.14-122.219.1
kernel-default-extra-debuginfo - update to 4.12.14-122.219.1
kernel-default-extra - update to 4.12.14-122.219.1
python3-perf - update to 4.19.90-2406.3.0.0282
bpftool-debuginfo - update to 4.19.90-2406.3.0.0282
kernel-debuginfo - update to 4.19.90-2406.3.0.0282
kernel-source - update to 4.19.90-2406.3.0.0282
python2-perf - update to 4.19.90-2406.3.0.0282
kernel-debugsource - update to 4.19.90-2406.3.0.0282
kernel-tools-debuginfo - update to 4.19.90-2406.3.0.0282
python3-perf-debuginfo - update to 4.19.90-2406.3.0.0282
perf-debuginfo - update to 4.19.90-2406.3.0.0282
kernel-tools-devel - update to 4.19.90-2406.3.0.0282
perf - update to 4.19.90-2406.3.0.0282
kernel-devel - update to 4.19.90-2406.3.0.0282
kernel-tools - update to 4.19.90-2406.3.0.0282
python2-perf-debuginfo - update to 4.19.90-2406.3.0.0282
bpftool - update to 4.19.90-2406.3.0.0282
kernel - update to 4.19.90-2406.3.0.0282
Dell Secure Connect Gateway - update to 5.26.00.18

• https://git.kernel.org/stable/c/8c3ec88b03e9e4ca117dcdc4204fd3edcd02084f
• https://git.kernel.org/stable/c/423c6939758fb3b9cf5abbd1e7792068a5c4ae8c
• https://git.kernel.org/stable/c/1f79bc8ae81c05eb112a53f981cb2c244ee50d02
• https://git.kernel.org/stable/c/06b7cb0194bd1ede0dd27f3a946e7c0279fba44a
• https://git.kernel.org/stable/c/2038cd15eacdf7512755c27686822e0052eb9042
• https://git.kernel.org/stable/c/5946fbf48355f5a8caeff72580c7658da5966b86
• https://git.kernel.org/stable/c/b25b60d076164edb3025e85aabd2cf50a5215b91
• https://git.kernel.org/stable/c/49bfcbfd989a8f1f23e705759a6bb099de2cff9f
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.238
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.196
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.274
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.274
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.128

• Memory leak in Linux kernel rds
• openEuler 20.03 LTS SP4 update for kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Multiple vulnerabilities in Dell Secure Connect Gateway