Resource management error in Linux kernel - CVE-2021-47294

Vulnerability identifier: #VU93279

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-2021-47294

CWE-ID: CWE-399

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 resource management error within the nr_heartbeat_expiry(), nr_t2timer_expiry(), nr_t4timer_expiry(), nr_idletimer_expiry() and nr_t1timer_expiry() functions in net/netrom/nr_timer.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Real Time 12
SUSE Linux Enterprise Live Patching
SUSE Linux Enterprise Workstation Extension 12
Ubuntu
openEuler
kgraft-patch-4_12_14-122_222-default
linux (Ubuntu package)
linux-fips (Ubuntu package)
ocfs2-kmp-rt-debuginfo
kernel-source-rt
kernel-rt-devel
dlm-kmp-rt
kernel-rt-debugsource
kernel-rt-base
kernel-rt_debug-debuginfo
kernel-rt_debug-debugsource
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-base-debuginfo
kernel-rt_debug-devel
cluster-md-kmp-rt
kernel-devel-rt
kernel-rt_debug
kernel-rt
kernel-rt_debug-devel-debuginfo
ocfs2-kmp-rt
gfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-syms-rt
kernel-azure-base
kernel-azure
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-base-debuginfo
kernel-syms-azure
kernel-azure-debugsource
kernel-devel-azure
kernel-source-azure
dlm-kmp-default-debuginfo
kernel-default-base
kernel-default
kernel-devel
kernel-source
kernel-macros
kernel-default-devel-debuginfo
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-docs
kernel-obs-build-debugsource
kernel-obs-build
kernel-default-man
kernel-default-extra
kernel-default-extra-debuginfo
gfs2-kmp-default
gfs2-kmp-default-debuginfo
kernel-default-debugsource
dlm-kmp-default
ocfs2-kmp-default
cluster-md-kmp-default-debuginfo
kernel-default-base-debuginfo
cluster-md-kmp-default
kernel-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-syms
kernel-default-devel
python2-perf
kernel-tools
bpftool
kernel-tools-devel
perf
kernel-debugsource
bpftool-debuginfo
kernel-debuginfo
python3-perf-debuginfo
kernel-tools-debuginfo
kernel
perf-debuginfo
python2-perf-debuginfo
python3-perf

Install update from vendor's website.

Linux kernel - addressed in versions 4.4.277, 4.9.277, 4.14.241, 4.19.199, 5.4.136, 5.10.54, 5.13.6, 5.14
kgraft-patch-4_12_14-122_222-default - update to 1-8.3.1
linux (Ubuntu package) - addressed in versions 4.4.0.274.280, 4.4.0-274.308, 4.4.0.274.308~14.04.1, 4.4.0-274.308~14.04.1, 4.4.0.1149.146, 4.4.0-1149.155, 4.4.0.1150.147, 4.4.0-1150.161, 4.4.0.1187.191, 4.4.0-1187.202
linux-fips (Ubuntu package) - addressed in versions 4.4.0.1119.120, 4.4.0-1119.126
ocfs2-kmp-rt-debuginfo - update to 4.12.14-10.191.1
kernel-source-rt - update to 4.12.14-10.191.1
kernel-rt-devel - update to 4.12.14-10.191.1
dlm-kmp-rt - update to 4.12.14-10.191.1
kernel-rt-debugsource - update to 4.12.14-10.191.1
kernel-rt-base - update to 4.12.14-10.191.1
kernel-rt_debug-debuginfo - update to 4.12.14-10.191.1
kernel-rt_debug-debugsource - update to 4.12.14-10.191.1
gfs2-kmp-rt - update to 4.12.14-10.191.1
dlm-kmp-rt-debuginfo - update to 4.12.14-10.191.1
kernel-rt-devel-debuginfo - update to 4.12.14-10.191.1
kernel-rt-base-debuginfo - update to 4.12.14-10.191.1
kernel-rt_debug-devel - update to 4.12.14-10.191.1
cluster-md-kmp-rt - update to 4.12.14-10.191.1
kernel-devel-rt - update to 4.12.14-10.191.1
kernel-rt_debug - update to 4.12.14-10.191.1
kernel-rt - update to 4.12.14-10.191.1
kernel-rt_debug-devel-debuginfo - update to 4.12.14-10.191.1
ocfs2-kmp-rt - update to 4.12.14-10.191.1
gfs2-kmp-rt-debuginfo - update to 4.12.14-10.191.1
kernel-rt-debuginfo - update to 4.12.14-10.191.1
cluster-md-kmp-rt-debuginfo - update to 4.12.14-10.191.1
kernel-syms-rt - update to 4.12.14-10.191.1
kernel-azure-base - update to 4.12.14-16.191.1
kernel-azure - update to 4.12.14-16.191.1
kernel-azure-debuginfo - update to 4.12.14-16.191.1
kernel-azure-devel - update to 4.12.14-16.191.1
kernel-azure-base-debuginfo - update to 4.12.14-16.191.1
kernel-syms-azure - update to 4.12.14-16.191.1
kernel-azure-debugsource - update to 4.12.14-16.191.1
kernel-devel-azure - update to 4.12.14-16.191.1
kernel-source-azure - update to 4.12.14-16.191.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.222.1
kernel-default-base - update to 4.12.14-122.222.1
kernel-default - update to 4.12.14-122.222.1
kernel-devel - update to 4.12.14-122.222.1
kernel-source - update to 4.12.14-122.222.1
kernel-macros - update to 4.12.14-122.222.1
kernel-default-devel-debuginfo - update to 4.12.14-122.222.1
kernel-default-kgraft-devel - update to 4.12.14-122.222.1
kernel-default-kgraft - update to 4.12.14-122.222.1
kernel-docs - update to 4.12.14-122.222.1
kernel-obs-build-debugsource - update to 4.12.14-122.222.1
kernel-obs-build - update to 4.12.14-122.222.1
kernel-default-man - update to 4.12.14-122.222.1
kernel-default-extra - update to 4.12.14-122.222.1
kernel-default-extra-debuginfo - update to 4.12.14-122.222.1
gfs2-kmp-default - update to 4.12.14-122.222.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.222.1
kernel-default-debugsource - update to 4.12.14-122.222.1
dlm-kmp-default - update to 4.12.14-122.222.1
ocfs2-kmp-default - update to 4.12.14-122.222.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.222.1
kernel-default-base-debuginfo - update to 4.12.14-122.222.1
cluster-md-kmp-default - update to 4.12.14-122.222.1
kernel-default-debuginfo - update to 4.12.14-122.222.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.222.1
kernel-syms - update to 4.12.14-122.222.1
kernel-default-devel - update to 4.12.14-122.222.1
python2-perf - update to 4.19.90-2406.2.0.0281
kernel-tools - update to 4.19.90-2406.2.0.0281
bpftool - update to 4.19.90-2406.2.0.0281
kernel-devel - update to 4.19.90-2406.2.0.0281
kernel-tools-devel - update to 4.19.90-2406.2.0.0281
perf - update to 4.19.90-2406.2.0.0281
kernel-debugsource - update to 4.19.90-2406.2.0.0281
kernel-source - update to 4.19.90-2406.2.0.0281
bpftool-debuginfo - update to 4.19.90-2406.2.0.0281
kernel-debuginfo - update to 4.19.90-2406.2.0.0281
python3-perf-debuginfo - update to 4.19.90-2406.2.0.0281
kernel-tools-debuginfo - update to 4.19.90-2406.2.0.0281
kernel - update to 4.19.90-2406.2.0.0281
perf-debuginfo - update to 4.19.90-2406.2.0.0281
python2-perf-debuginfo - update to 4.19.90-2406.2.0.0281
python3-perf - update to 4.19.90-2406.2.0.0281

• https://git.kernel.org/stable/c/853262355518cd1247515b74e83fabf038aa6c29
• https://git.kernel.org/stable/c/a01634bf91f2b6c42583770eb6815fb6d1e251cf
• https://git.kernel.org/stable/c/48866fd5c361ea417ed24b43fc2a7dc2f5b060ef
• https://git.kernel.org/stable/c/9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950
• https://git.kernel.org/stable/c/25df44e90ff5959b5c24ad361b648504a7e39ef3
• https://git.kernel.org/stable/c/6811744bd0efb9e472cb15d066cdb460beb8cb8a
• https://git.kernel.org/stable/c/bc1660206c3723c37ed4d622ad81781f1e987250
• https://git.kernel.org/stable/c/517a16b1a88bdb6b530f48d5d153478b2552d9a8
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.241
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.199
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.277
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.277
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.54
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.6
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.136

• Resource management error in Linux kernel netrom
• 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
• Ubuntu update for linux
• Ubuntu update for linux-fips