In the Linux kernel, the following vulnerability has been resolved:
net: mctp: unshare packets when reassembling
Ensure that the frag_list used for reassembly isn't shared with other packets. This avoids incorrect reassembly when packets are cloned, and prevents a memory leak due to circular references between fragments and their skb_shared_info.
The upcoming MCTP-over-USB driver uses skb_clone which can trigger the problem - other MCTP drivers don't share SKBs.
A kunit test is added to reproduce the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 15, 2025 | Apr 1, 2025 |
| Suse | — | Upgrade dtb-marvellUpgrade kernel-default-livepatchUpgrade kernel-debug-develUpgrade kernel-macrosUpgrade reiserfs-kmp-64kbUpgrade dtb-exynosUpgrade kernel-devel-azureUpgrade kernel-kvmsmallUpgrade kernel-rt_debugUpgrade kernel-source-rtUpgrade kernel-default-extraUpgrade kernel-syms-rtUpgrade gfs2-kmp-64kbUpgrade ocfs2-kmp-64kbUpgrade dlm-kmp-defaultUpgrade kernel-zfcpdumpUpgrade reiserfs-kmp-defaultUpgrade kernel-default-develUpgrade ocfs2-kmp-azureUpgrade dtb-renesasUpgrade reiserfs-kmp-rtUpgrade kernel-kvmsmall-develUpgrade kernel-rt-livepatch-develUpgrade kernel-64kb-optionalUpgrade kernel-64kbUpgrade kernel-64kb-develUpgrade ocfs2-kmp-rtUpgrade kernel-default-baseUpgrade kernel-docs-htmlUpgrade kernel-kvmsmall-vdsoUpgrade kselftests-kmp-64kbUpgrade kernel-sourceUpgrade kernel-source-azureUpgrade kernel-debugUpgrade dtb-hisiliconUpgrade dlm-kmp-64kbUpgrade dtb-allwinnerUpgrade gfs2-kmp-azureUpgrade dtb-alteraUpgrade dtb-amdUpgrade cluster-md-kmp-azureUpgrade dtb-lgUpgrade dtb-apmUpgrade gfs2-kmp-rtUpgrade dtb-socionextUpgrade kernel-obs-qaUpgrade dtb-caviumUpgrade kernel-rt_debug-vdsoUpgrade kselftests-kmp-azureUpgrade kernel-azure-optionalUpgrade kernel-symsUpgrade kernel-rt-optionalUpgrade kernel-default-livepatch-develUpgrade kernel-azure-extraUpgrade dtb-broadcomUpgrade kernel-azure-vdsoUpgrade dtb-appleUpgrade dtb-amazonUpgrade dtb-freescaleUpgrade kernel-rt_debug-develUpgrade dlm-kmp-azureUpgrade kselftests-kmp-defaultUpgrade kernel-develUpgrade dtb-qcomUpgrade kernel-default-vdsoUpgrade kernel-azureUpgrade kernel-rt-vdsoUpgrade cluster-md-kmp-defaultUpgrade kernel-devel-rtUpgrade kernel-64kb-extraUpgrade gfs2-kmp-defaultUpgrade kernel-defaultUpgrade dtb-xilinxUpgrade dtb-mediatekUpgrade reiserfs-kmp-azureUpgrade ocfs2-kmp-defaultUpgrade kernel-rt-develUpgrade cluster-md-kmp-rtUpgrade kselftests-kmp-rtUpgrade kernel-rtUpgrade kernel-docsUpgrade dtb-armUpgrade dtb-amlogicUpgrade kernel-default-base-rebuildUpgrade kernel-syms-azureUpgrade dtb-sprdUpgrade kernel-source-vanillaUpgrade dlm-kmp-rtUpgrade kernel-rt-extraUpgrade cluster-md-kmp-64kbUpgrade kernel-debug-vdsoUpgrade kernel-obs-buildUpgrade kernel-default-optionalUpgrade dtb-nvidiaUpgrade kernel-azure-develUpgrade dtb-rockchip | Dec 5, 2025 | May 21, 2025 |
| Ubuntu | — | Upgrade linux-image-oracleUpgrade linux-image-realtime-6.8.1Upgrade linux-image-gcp-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-azure-fde-edgeUpgrade linux-image-6.8.0-1037-ibmUpgrade linux-image-ibm-classicUpgrade linux-image-6.11.0-1017-oracle-64kUpgrade linux-image-6.8.0-1025-azure-nvidiaUpgrade linux-image-azure-nvidiaUpgrade linux-image-6.11.0-1011-realtimeUpgrade linux-image-6.11.0-1017-oracleUpgrade linux-image-lowlatency-6.8Upgrade linux-image-6.11.0-1015-lowlatencyUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.11.0-1015-lowlatency-64kUpgrade linux-image-6.8.0-1039-aws-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-85-generic-64kUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-84-lowlatency-64kUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-gke-64kUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1037-oracle-64kUpgrade linux-image-6.8.0-1039-awsUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-84-genericUpgrade linux-image-6.8.0-1039-nvidia-lowlatencyUpgrade linux-image-oem-22.04dUpgrade linux-image-gcp-64kUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1040-gcpUpgrade linux-image-ibmUpgrade linux-image-6.8.0-1023-gkeopUpgrade linux-image-lowlatency-6.11Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.1-1034-realtimeUpgrade linux-image-6.11.0-28-generic-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-1039-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-64k-6.11Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-84-lowlatencyUpgrade linux-image-generic-64k-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-raspiUpgrade linux-image-6.8.0-1036-gke-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1039-nvidia-64kUpgrade linux-image-awsUpgrade linux-image-azure-lts-24.04Upgrade linux-image-oem-24.04bUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-realtimeUpgrade linux-image-ibm-6.8Upgrade linux-image-azure-fde-6.11Upgrade linux-image-oracle-6.8Upgrade linux-image-gkeopUpgrade linux-image-6.8.0-1036-azureUpgrade linux-image-gkeUpgrade linux-image-6.11.0-1018-azure-fdeUpgrade linux-image-6.8.0-1036-azure-fdeUpgrade linux-image-generic-64kUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1037-oracleUpgrade linux-image-6.11.0-1024-oemUpgrade linux-image-aws-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-virtualUpgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-85-genericUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1038-azureUpgrade linux-image-oem-22.04cUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-azure-nvidia-6.8Upgrade linux-image-6.11.0-1014-raspiUpgrade linux-image-gcpUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-generic-6.8Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-genericUpgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-1038-azure-fdeUpgrade linux-image-6.11.0-1018-azureUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.11.0-28-genericUpgrade linux-image-6.8.0-1040-gcp-64kUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-6.8.0-1036-gkeUpgrade linux-image-6.11.0-1015-awsUpgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.11.0-1016-gcp-64kUpgrade linux-image-azureUpgrade linux-image-aws-6.8Upgrade linux-image-gke-64k-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-lowlatencyUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-azure-6.11Upgrade linux-image-azure-fde-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-raspi-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gke-6.8Upgrade linux-image-6.8.0-84-generic-64kUpgrade linux-image-6.8.0-2031-raspi-realtimeUpgrade linux-image-6.8.0-1039-raspiUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-nvidiaUpgrade linux-image-6.11.0-1016-gcpUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-1039-nvidiaUpgrade linux-image-oem-22.04b | Jun 26, 2025 | Apr 1, 2025 |
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