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OpenAdvisories

Description

A flaw in ICMP packets in the Linux kernel may allow an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass source port UDP randomization. Software that relies on UDP source port randomization are indirectly affected as well on the Linux Based Products (RUGGEDCOM RM1224: All versions between v5.0 and v6.4, SCALANCE M-800: All versions between v5.0 and v6.4, SCALANCE S615: All versions between v5.0 and v6.4, SCALANCE SC-600: All versions prior to v2.1.3, SCALANCE W1750D: v8.3.0.1, v8.6.0, and v8.7.0, SIMATIC Cloud Connect 7: All versions, SIMATIC MV500 Family: All versions, SIMATIC NET CP 1243-1 (incl. SIPLUS variants): Versions 3.1.39 and later, SIMATIC NET CP 1243-7 LTE EU: Version

Affected products

VendorProductAffectedFixed
— Siemens Lunux Based Products RUGGEDCOM RM1224: All versions between v5.0 and v6.4, SCALANCE M-800: All versions between v5.0 and v6.4, SCALANCE S615: All versions between v5.0 and v6.4, SCALANCE SC-600: All versions prior to v2.1.3, SCALANCE W1750D: v8.3.0.1, v8.6.0, and v8.7.0, SIMATIC Cloud Connect 7: All versions, SIMATIC M… —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.9.6-1 —
Debian 13 linux 5.9.6-1 —
Debian 12 linux 5.9.6-1 —
Debian 9 linux 4.9.246-1 DLA-2494-1
Debian 9 linux-4.19 4.19.160-2~deb9u1 DLA-2483-1
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-realtime +1 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-56.62 USN-4658-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1030.31 USN-4658-1
Ubuntu 20.04 LTS linux-azure 5.4.0-1032.33 USN-4658-1
Ubuntu 20.04 LTS linux-gcp +1 5.4.0-1030.32 USN-4658-1
Ubuntu 20.04 LTS linux-hwe-5.8 5.8.0-31.33~20.04.1 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1028.29 USN-4658-1
Ubuntu 20.04 LTS linux-oem-5.6 5.6.0-1050.54 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1023.26 USN-4658-1
Ubuntu 20.04 LTS linux-raspi2 No fix yet —
Ubuntu 20.04 LTS linux-riscv 5.4.0-37.42 —
Ubuntu 18.04 LTS linux 4.15.0-129.132 USN-4680-1
Ubuntu 18.04 LTS linux-aws 4.15.0-1091.96 USN-4680-1
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1030.31~18.04.1 USN-4658-1
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1103.114 USN-4680-1
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1032.33~18.04.1 USN-4658-1
Ubuntu 18.04 LTS linux-dell300x 4.15.0-1010.14 —
Ubuntu 18.04 LTS linux-gcp +12 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1091.104 USN-4680-1
Ubuntu 18.04 LTS linux-gcp-5.4 +2 5.4.0-1030.32~18.04.1 USN-4658-1
Ubuntu 18.04 LTS linux-gkeop-5.4 5.4.0-1005.6 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-56.62~18.04.1 USN-4658-1
Ubuntu 18.04 LTS linux-kvm 4.15.0-1082.84 USN-4680-1
Ubuntu 18.04 LTS linux-oracle 4.15.0-1062.68 USN-4680-1
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1023.26~18.04.1 USN-4658-1
Ubuntu 18.04 LTS linux-raspi2 +1 4.15.0-1077.82 USN-4680-1
Ubuntu 18.04 LTS linux-snapdragon 4.15.0-1094.103 USN-4680-1
Ubuntu 16.04 LTS linux 4.4.0-197.229 USN-4657-1
Ubuntu 16.04 LTS linux-aws 4.4.0-1118.132 USN-4657-1
Ubuntu 16.04 LTS linux-aws-hwe 4.15.0-1091.96~16.04.1 USN-4680-1
Ubuntu 16.04 LTS linux-azure 4.15.0-1103.114~16.04.1 USN-4680-1
Ubuntu 16.04 LTS linux-gcp 4.15.0-1091.104~16.04.1 USN-4680-1
Ubuntu 16.04 LTS linux-hwe 4.15.0-129.132~16.04.1 USN-4680-1
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu 16.04 LTS linux-kvm 4.4.0-1084.93 USN-4657-1
Ubuntu 16.04 LTS linux-oracle 4.15.0-1062.68~16.04.1 USN-4680-1
Ubuntu 16.04 LTS linux-raspi2 4.4.0-1142.152 USN-4657-1
Ubuntu 16.04 LTS linux-snapdragon 4.4.0-1146.156 USN-4657-1
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 20.04 LTS linux-aws-fips +2 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1069.73+fips2 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1073.76+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1067.71~20.04.1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2034.35 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2016.18 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1049.56 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1051.57 —
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1082.86 USN-4657-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1103.114~14.04.1 USN-4680-1
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-197.229~14.04.1 USN-4657-1
ReleasePackageFixed inAdvisory
RHEL 8 kernel-rt +12 4.18.0-240.15.1.rt7.69.el8_3 RHSA-2021:0537
RHEL 8 perf +26 4.18.0-240.15.1.el8_3 RHSA-2021:0558
RHEL 7 kernel-rt +10 3.10.0-1160.21.1.rt56.1158.el7 RHSA-2021:0857
RHEL 7 perf +18 3.10.0-1160.21.1.el7 RHSA-2021:0856
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 8.2 EUS kernel-rt +12 4.18.0-193.46.1.rt13.96.el8_2 RHSA-2021:0774
RHEL 8.2 EUS perf +26 4.18.0-193.46.1.el8_2 RHSA-2021:0765
RHEL 8.1 EUS kernel +18 4.18.0-147.43.1.el8_1 RHSA-2021:0686
RHEL 7.7 EUS perf +18 3.10.0-1062.49.1.el7 RHSA-2021:1531
RHEL 7.6 TUS perf +12 3.10.0-957.76.1.el7 RHSA-2021:2355
RHEL 7.6 E4S perf +14 3.10.0-957.76.1.el7 RHSA-2021:2355
RHEL 7.6 AUS perf +12 3.10.0-957.76.1.el7 RHSA-2021:2355
RHEL 7.4 TUS perf +11 3.10.0-693.87.1.el7 RHSA-2021:2164
RHEL 7.4 E4S perf +13 3.10.0-693.87.1.el7 RHSA-2021:2164
RHEL 7.4 AUS perf +11 3.10.0-693.87.1.el7 RHSA-2021:2164

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 8 kernel-tools-libs-devel 4.18.0-240.15.1.el8_3 ALSA-2021:0558
ReleasePackageFixed inAdvisory
SLES 15 SP2 kernel-azure +2 5.3.18-18.24.1 SUSE-SU-2020:3491-1
SLES 15 SP2 kernel-default-base 5.3.18-24.37.1.9.13.1 SUSE-SU-2020:3273-1
SLES 15 SP2 kernel-docs +5 5.3.18-24.37.1 SUSE-SU-2020:3273-1
SLES 15 SP1 kernel-azure +2 4.12.14-8.52.1 SUSE-SU-2020:3484-1
SLES 15 SP1 kernel-docs 4.12.14-197.72.2 SUSE-SU-2020:3507-1
SLES 15 SP1 kernel-syms +4 4.12.14-197.72.1 SUSE-SU-2020:3507-1
SLES 15 kernel-docs +6 4.12.14-150.63.1 SUSE-SU-2020:3532-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.34.1 SUSE-SU-2020:3281-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.51.2 SUSE-SU-2020:3717-1, SUSE-SU-2020:3326-1
SLES 12 SP4 kernel-syms +2 4.12.14-95.65.1 SUSE-SU-2020:3544-1
Show 23 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP3 kernel-syms +2 4.4.180-94.135.1 SUSE-SU-2020:3503-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_30 9-2.2 SUSE-SU-2020:3651-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_31 6-2.2 SUSE-SU-2020:3651-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_32 +1 5-2.2 SUSE-SU-2020:3651-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_34 5-2.1 SUSE-SU-2020:3651-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_35 4-2.1 SUSE-SU-2020:3651-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_36 1-4.5.1 SUSE-SU-2020:3503-1
SLES 12 SP2 kernel-syms +2 4.4.121-92.146.1 SUSE-SU-2020:3501-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_34 7-2.2 SUSE-SU-2020:3651-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_35 5-2.2 SUSE-SU-2020:3651-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_36 5-2.1 SUSE-SU-2020:3651-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_37 4-2.1 SUSE-SU-2020:3651-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_38 1-3.5.1 SUSE-SU-2020:3501-1
SLES for SAP 15 kernel-docs +5 4.12.14-150.63.1 SUSE-SU-2020:3532-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.34.1 SUSE-SU-2020:3281-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.51.2 SUSE-SU-2020:3717-1, SUSE-SU-2020:3326-1
SLES for SAP 12 SP4 kernel-syms +2 4.12.14-95.65.1 SUSE-SU-2020:3544-1
SLES for SAP 12 SP3 kernel-syms +2 4.4.180-94.135.1 SUSE-SU-2020:3503-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_30 9-2.2 SUSE-SU-2020:3651-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_31 6-2.2 SUSE-SU-2020:3651-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_32 +1 5-2.2 SUSE-SU-2020:3651-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_34 5-2.1 SUSE-SU-2020:3651-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_35 4-2.1 SUSE-SU-2020:3651-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_36 1-4.5.1 SUSE-SU-2020:3503-1
SLES for SAP 12 SP2 kernel-syms +2 4.4.121-92.146.1 SUSE-SU-2020:3501-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_34 7-2.2 SUSE-SU-2020:3651-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_35 5-2.2 SUSE-SU-2020:3651-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_36 5-2.1 SUSE-SU-2020:3651-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_37 4-2.1 SUSE-SU-2020:3651-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_38 1-3.5.1 SUSE-SU-2020:3501-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.22.1 SUSE-SU-2020:3512-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-24.37.1 SUSE-SU-2020:3273-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_0 5-5.2 SUSE-SU-2020:3651-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_1 5-2.1 SUSE-SU-2020:3651-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_2 +2 4-2.1 SUSE-SU-2020:3651-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_5 +1 2-2.1 SUSE-SU-2020:3651-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_7 1-5.3.1 SUSE-SU-2020:3273-1
SLE Live Patching 15 SP1 kernel-default 4.12.14-197.72.1 SUSE-SU-2020:3507-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_11 7-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_12 5-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_13 +1 5-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_15 4-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_16 3-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_17 +1 2-2.1 SUSE-SU-2020:3690-1, SUSE-SU-2020:3670-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_19 1-3.3.1 SUSE-SU-2020:3507-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_8 9-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_9 +1 8-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 15 kernel-default 4.12.14-150.63.1 SUSE-SU-2020:3532-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_17 9-2.2 SUSE-SU-2020:3651-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_18 5-2.2 SUSE-SU-2020:3651-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_19 5-2.1 SUSE-SU-2020:3651-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_20 4-2.1 SUSE-SU-2020:3651-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_21 1-1.5.1 SUSE-SU-2020:3532-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.51.2 SUSE-SU-2020:3717-1, SUSE-SU-2020:3326-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_0 9-3.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_1 +1 9-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_10 3-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_11 2-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_12 1-8.5.2 SUSE-SU-2020:3326-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_13 1-8.3.1 SUSE-SU-2020:3717-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_3 8-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_4 7-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_5 +1 5-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_7 +1 5-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_9 4-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP4 kernel-default 4.12.14-95.65.1 SUSE-SU-2020:3544-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_11 9-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_12 8-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_13 7-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_14 5-2.2 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_15 5-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_16 4-2.1 SUSE-SU-2020:3670-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_17 1-6.5.1 SUSE-SU-2020:3544-1
SLE HPC 15 kernel-docs +5 4.12.14-150.63.1 SUSE-SU-2020:3532-1
SUSE Real Time Module 15 SP2 kernel-rt +3 5.3.18-16.1 SUSE-SU-2020:3764-1, SUSE-SU-2020:3522-1
SUSE Real Time Module 15 SP1 kernel-rt +3 4.12.14-14.41.2 SUSE-SU-2020:3513-1
SUSE OpenStack Cloud Crowbar 9 kernel-syms +2 4.12.14-95.65.1 SUSE-SU-2020:3544-1
SUSE OpenStack Cloud Crowbar 8 kernel-syms +2 4.4.180-94.135.1 SUSE-SU-2020:3503-1
SUSE OpenStack Cloud Crowbar 8 kgraft-patch-SLE12-SP3_Update_36 1-4.5.1 SUSE-SU-2020:3503-1
SUSE OpenStack Cloud 9 kernel-syms +2 4.12.14-95.65.1 SUSE-SU-2020:3544-1
SUSE OpenStack Cloud 8 kernel-syms +2 4.4.180-94.135.1 SUSE-SU-2020:3503-1
SUSE OpenStack Cloud 8 kgraft-patch-SLE12-SP3_Update_36 1-4.5.1 SUSE-SU-2020:3503-1
SUSE OpenStack Cloud 7 kernel-syms +2 4.4.121-92.146.1 SUSE-SU-2020:3501-1
SUSE OpenStack Cloud 7 kgraft-patch-SLE12-SP2_Update_38 1-3.5.1 SUSE-SU-2020:3501-1
SUSE HPE Helion OpenStack 8 kernel-syms +2 4.4.180-94.135.1 SUSE-SU-2020:3503-1
SUSE HPE Helion OpenStack 8 kgraft-patch-SLE12-SP3_Update_36 1-4.5.1 SUSE-SU-2020:3503-1
SUSE Enterprise Storage 5 kernel-syms +2 4.4.180-94.135.1 SUSE-SU-2020:3503-1
SUSE Enterprise Storage 5 kgraft-patch-SLE12-SP3_Update_36 1-4.5.1 SUSE-SU-2020:3503-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed sca-patterns-sle12 +1 1.0.8-2.2 openSUSE-SU-2024:11371-1, openSUSE-SU-2024:11370-1
openSUSE Leap 15.2 kernel-default-base 5.3.18-lp152.50.1.lp152.8.10.1 openSUSE-SU-2020:2161-1, openSUSE-SU-2020:2112-1
openSUSE Leap 15.2 kernel-docs +8 5.3.18-lp152.50.1 openSUSE-SU-2020:2161-1, openSUSE-SU-2020:1906-1
openSUSE Leap 15.2 kernel-rt +3 5.3.18-lp152.3.5.1 openSUSE-SU-2021:0242-1
openSUSE Leap 15.1 kernel-docs +8 4.12.14-lp151.28.83.1 openSUSE-SU-2020:2034-1

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 8 perf +19 4.18.0-240.15.1.el8_3 ELSA-2021-0558
Oracle Linux 7 kernel-uek +5 4.1.12-124.46.3.el7uek ELSA-2021-9006, ELSA-2021-9002
Oracle Linux 7 kernel-uek-container +1 5.4.17-2036.102.0.2.el8 ELSA-2021-9007
Oracle Linux 7 kernel-uek-tools +1 5.4.17-2036.102.0.2.el7uek ELSA-2021-9006
Oracle Linux 7 perf +12 3.10.0-1160.21.1.el7 ELSA-2021-9006, ELSA-2021-0856

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 2 repositories

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 50

References