In the Linux kernel, the following vulnerability has been resolved:
mptcp: plug races between subflow fail and subflow creation
We have races similar to the one addressed by the previous patch between subflow failing and additional subflow creation. They are just harder to trigger.
The solution is similar. Use a separate flag to track the condition 'socket state prevent any additional subflow creation' protected by the fallback lock.
The socket fallback makes such flag true, and also receiving or sending an MP_FAIL option.
The field 'allow_infinite_fallback' is now always touched under the relevant lock, we can drop the ONCE annotation on write.
CVSS Details
- CVSS 3.1 Base Score: 9.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-develUpgrade kernel-modules-extra-commonUpgrade kernel-toolsUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel-develUpgrade kernel-libbpf-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade bpftoolUpgrade kernel6.12-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.12-headersUpgrade python3-perf-debuginfoUpgrade perfUpgrade perf6.12-debuginfoUpgrade bpftool-debuginfoUpgrade kernel6.12-libbpfUpgrade kernel6.12-libbpf-staticUpgrade kernel6.12-libbpf-develUpgrade kernel-libbpf-develUpgrade kernel6.12-modules-extraUpgrade kernel6.12-tools-develUpgrade bpftool6.12-debuginfoUpgrade bpftool6.12Upgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel-libbpf-staticUpgrade kernel6.12-toolsUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernel-libbpfUpgrade perf-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernelUpgrade perf6.12Upgrade kernel-livepatch-6.12.40-63.114Upgrade kernel-tools-debuginfoUpgrade python3-perfUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12Upgrade kernel-modules-extraUpgrade kernel-headersUpgrade kernel-livepatch-6.1.150-174.273 | Oct 16, 2025 | Aug 16, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Sep 25, 2025 | Sep 25, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Aug 16, 2025 |
| Suse | — | Upgrade kernel-64kbUpgrade kernel-kvmsmall-develUpgrade kernel-default-develUpgrade kernel-default-livepatch-develUpgrade dtb-socionextUpgrade ocfs2-kmp-defaultUpgrade kernel-default-baseUpgrade kernel-rt-optionalUpgrade kernel-sourceUpgrade dtb-amdUpgrade kernel-default-livepatchUpgrade kernel-rt-livepatch-develUpgrade dtb-marvellUpgrade dtb-alteraUpgrade kernel-kvmsmallUpgrade kselftests-kmp-64kbUpgrade dtb-caviumUpgrade dtb-broadcomUpgrade ocfs2-kmp-rtUpgrade dtb-renesasUpgrade dtb-appleUpgrade dtb-hisiliconUpgrade dtb-exynosUpgrade dlm-kmp-64kbUpgrade kernel-64kb-optionalUpgrade kernel-kvmsmall-vdsoUpgrade kernel-zfcpdumpUpgrade reiserfs-kmp-defaultUpgrade dtb-freescaleUpgrade ocfs2-kmp-64kbUpgrade dtb-lgUpgrade gfs2-kmp-64kbUpgrade kernel-source-vanillaUpgrade gfs2-kmp-rtUpgrade dtb-allwinnerUpgrade dtb-amazonUpgrade kernel-docs-htmlUpgrade gfs2-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kernel-docsUpgrade dtb-rockchipUpgrade dtb-qcomUpgrade dtb-armUpgrade kernel-macrosUpgrade kernel-develUpgrade kselftests-kmp-defaultUpgrade kernel-rtUpgrade dtb-nvidiaUpgrade cluster-md-kmp-64kbUpgrade dlm-kmp-defaultUpgrade kernel-default-optionalUpgrade kernel-64kb-develUpgrade cluster-md-kmp-rtUpgrade dtb-apmUpgrade dtb-amlogicUpgrade cluster-md-kmp-defaultUpgrade kernel-default-vdsoUpgrade kernel-64kb-extraUpgrade dtb-mediatekUpgrade kernel-defaultUpgrade kernel-obs-qaUpgrade dtb-sprdUpgrade kselftests-kmp-rtUpgrade kernel-symsUpgrade kernel-rt-livepatchUpgrade kernel-rt-extraUpgrade kernel-rt-develUpgrade kernel-obs-buildUpgrade kernel-default-extraUpgrade dtb-xilinxUpgrade dlm-kmp-rt | Dec 5, 2025 | Nov 6, 2025 |
| Ubuntu | — | Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-aws-64k-6.14Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-6.14.0-1016-oemUpgrade linux-image-awsUpgrade linux-image-6.14.0-36-genericUpgrade linux-image-oracle-6.8Upgrade linux-image-virtual-6.14Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-intel-iotgUpgrade linux-image-xilinxUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-fips-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-aws-6.14Upgrade linux-image-aws-fips-6.8Upgrade linux-image-raspi-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oem-22.04cUpgrade linux-image-6.14.0-1017-oracle-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gcp-6.14Upgrade linux-image-gke-64k-6.8Upgrade linux-image-generic-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-6.14.0-1016-realtimeUpgrade linux-image-gke-6.8Upgrade linux-image-kvmUpgrade linux-image-generic-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-aws-6.8Upgrade linux-image-aws-64kUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-azure-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-aws-64k-6.8Upgrade linux-image-azureUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-oem-24.04aUpgrade linux-image-xilinx-6.8Upgrade linux-image-6.14.0-1018-raspiUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-raspi-6.14Upgrade linux-image-ibm-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-generic-6.14Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oem-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-virtualUpgrade linux-image-realtimeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-raspiUpgrade linux-image-azure-lts-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-6.14.0-1017-oracleUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-gkeUpgrade linux-image-6.14.0-1020-gcp-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-gcp-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gcp-fipsUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-gcp-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-6.14.0-1017-azureUpgrade linux-image-gkeop-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-realtime-6.14Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-oem-22.04aUpgrade linux-image-gkeopUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-generic-lpaeUpgrade linux-image-azure-6.14Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-6.14.0-36-generic-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-oracle-6.14Upgrade linux-image-oem-6.14Upgrade linux-image-gke-64kUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-genericUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-ibmUpgrade linux-image-lowlatency-64kUpgrade linux-image-fipsUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-6.14.0-1017-awsUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.14.0-1017-aws-64kUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-6.14.0-1020-gcpUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-generic-64k-6.14Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-oracleUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-lowlatency-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatency | Nov 25, 2025 | Nov 21, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 27, 2026 | Aug 16, 2025 |
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