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Medium · 4.7 CVE-2022-49571 EUVD-2022-54661GHSA-jw75-r63h-46q8

tcp: Fix data-races around sysctl_tcp_max_reordering.

Published Feb 26, 2025 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

tcp: Fix data-races around sysctl_tcp_max_reordering.

While reading sysctl_tcp_max_reordering, it can be changed
concurrently. Thus, we need to add READ_ONCE() to its readers.

Affected products

VendorProductAffectedFixed
Linux Linux 3.19 4.19.254

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.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 5.18.16-1 —
Debian 13 linux 5.18.16-1 —
Debian 12 linux 5.18.16-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-50.56 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1021.25 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1021.26 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1024.30.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1019.25 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1017.20 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1004.6 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1015.17 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1017.22 —
Ubuntu 22.04 LTS linux-kvm 5.15.0-1019.23 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1015.15 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1019.24 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1016.18 —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-128.144 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1086.93 —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1021.25~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1094.100 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1021.26~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1047.52 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1090.98 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1021.28~20.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-50.56~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1034.38 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1017.22~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1005.7 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1076.81 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1084.92 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1019.24~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1071.81 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1022.26~20.04.1 —
Ubuntu 18.04 LTS linux 4.15.0-197.208 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1143.155 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1086.93~18.04.1 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1157.172 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1094.100~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1138.154 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1092.101~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-128.144~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1034.38~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1129.134 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1108.119 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1084.92~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1071.81~18.04.1 —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1022.22 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 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 5.4.0-1086.93+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1094.100+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1062.70 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1092.101+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2082.88 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2066.72 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1100.111 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2047.52 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro 16.04 LTS linux +2 No fix yet —
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1143.155~16.04.1 —
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1159.174~16.04.1 —
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1138.154~16.04.1 —
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-197.208~16.04.1 —
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1108.119~16.04.1 —
Ubuntu Pro 14.04 LTS linux-aws +1 No fix yet —
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1157.172~14.04.2 —

References