In the Linux kernel, the following vulnerability has been resolved:
pptp: ensure minimal skb length in pptp_xmit()
Commit aabc6596ffb3 ("net: ppp: Add bound checking for skb data on ppp_sync_txmung") fixed ppp_sync_txmunge()
We need a similar fix in pptp_xmit(), otherwise we might read uninit data as reported by syzbot.
BUG: KMSAN: uninit-value in pptp_xmit+0xc34/0x2720 drivers/net/ppp/pptp.c:193 pptp_xmit+0xc34/0x2720 drivers/net/ppp/pptp.c:193 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2290 [inline] ppp_input+0x1d6/0xe60 drivers/net/ppp/ppp_generic.c:2314 pppoe_rcv_core+0x1e8/0x760 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x142/0x420 include/net/sock.h:1148 __release_sock+0x1d3/0x330 net/core/sock.c:3213 release_sock+0x6b/0x270 net/core/sock.c:3767 pppoe_sendmsg+0x15d/0xcb0 drivers/net/ppp/pppoe.c:904 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x330/0x3d0 net/socket.c:727 ____sys_sendmsg+0x893/0xd80 net/socket.c:2566 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2620 __sys_sendmmsg+0x2d9/0x7c0 net/socket.c:2709
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-debuginfoUpgrade python-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-livepatch-5.10.242-239.961Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade perf | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Sep 8, 2025 | Sep 8, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade bpftoolUpgrade kernelUpgrade kernel-tools-libs | Dec 12, 2025 | Nov 11, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel | Nov 12, 2025 | Nov 11, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelists | Nov 21, 2025 | Nov 11, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Oct 14, 2025 | Aug 19, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Aug 19, 2025 |
| Suse | — | Upgrade dtb-rockchipUpgrade kernel-obs-qaUpgrade kernel-symsUpgrade kernel-rt-develUpgrade kernel-syms-rtUpgrade cluster-md-kmp-rtUpgrade kernel-devel-azureUpgrade reiserfs-kmp-azureUpgrade dtb-nvidiaUpgrade kernel-64kb-develUpgrade kernel-syms-azureUpgrade cluster-md-kmp-azureUpgrade dtb-hisiliconUpgrade kernel-debugUpgrade dtb-apmUpgrade kernel-azure-vdsoUpgrade dlm-kmp-defaultUpgrade kernel-defaultUpgrade kernel-default-optionalUpgrade kselftests-kmp-defaultUpgrade kernel-docsUpgrade kernel-default-base-rebuildUpgrade kernel-zfcpdumpUpgrade reiserfs-kmp-defaultUpgrade dtb-socionextUpgrade cluster-md-kmp-defaultUpgrade kernel-default-manUpgrade kernel-rt_debug-vdsoUpgrade kernel-kvmsmall-develUpgrade gfs2-kmp-rtUpgrade kselftests-kmp-rtUpgrade kernel-develUpgrade kernel-64kb-optionalUpgrade kernel-macrosUpgrade dtb-amlogicUpgrade dtb-xilinxUpgrade kernel-rt-livepatch-develUpgrade kernel-default-extraUpgrade dtb-mediatekUpgrade dtb-qcomUpgrade kernel-kvmsmallUpgrade kernel-devel-rtUpgrade kernel-rt-livepatchUpgrade ocfs2-kmp-rtUpgrade reiserfs-kmp-rtUpgrade dtb-armUpgrade kernel-debug-develUpgrade dlm-kmp-azureUpgrade gfs2-kmp-64kbUpgrade dtb-renesasUpgrade ocfs2-kmp-azureUpgrade kernel-rtUpgrade kernel-obs-buildUpgrade kernel-source-vanillaUpgrade kernel-default-livepatchUpgrade dtb-amdUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-azureUpgrade kernel-rt_debugUpgrade kernel-default-baseUpgrade dtb-lgUpgrade kernel-debug-vdsoUpgrade kernel-rt_debug-develUpgrade kernel-docs-htmlUpgrade kernel-azure-extraUpgrade dtb-broadcomUpgrade kernel-kvmsmall-vdsoUpgrade kernel-azureUpgrade kernel-default-livepatch-develUpgrade dtb-caviumUpgrade ocfs2-kmp-64kbUpgrade kselftests-kmp-64kbUpgrade kernel-azure-optionalUpgrade kernel-source-azureUpgrade kernel-sourceUpgrade cluster-md-kmp-64kbUpgrade ocfs2-kmp-defaultUpgrade kernel-source-rtUpgrade kernel-default-develUpgrade dtb-sprdUpgrade dtb-marvellUpgrade dtb-alteraUpgrade kernel-default-vdsoUpgrade kernel-64kbUpgrade dtb-exynosUpgrade kernel-rt-optionalUpgrade kernel-azure-develUpgrade gfs2-kmp-defaultUpgrade kernel-rt-vdsoUpgrade dtb-freescaleUpgrade dtb-appleUpgrade dtb-amazonUpgrade dlm-kmp-rtUpgrade gfs2-kmp-azureUpgrade kernel-64kb-extraUpgrade kernel-rt-extraUpgrade dtb-allwinnerUpgrade dlm-kmp-64kb | Dec 5, 2025 | Oct 15, 2025 |
| Ubuntu | — | Upgrade linux-image-generic-lpaeUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oracle-6.14Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.14.0-1016-oemUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-aws-64k-5.15Upgrade linux-image-ibmUpgrade linux-image-ibm-classicUpgrade linux-image-generic-6.8Upgrade linux-image-oem-6.14Upgrade linux-image-awsUpgrade linux-image-gcp-6.8Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-5.15.0-1080-gkeopUpgrade linux-image-virtualUpgrade linux-image-5.15.0-1096-realtimeUpgrade linux-image-oracleUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-5.15.0-163-generic-lpaeUpgrade linux-image-5.15.0-1094-oracleUpgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-generic-64k-6.14Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-5.15.0-163-genericUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-5.15.0-1091-ibmUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-1089-intel-iot-realtimeUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-5.15.0-1092-nvidiaUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-5.15.0-1097-gcp-fipsUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-aws-64kUpgrade linux-image-5.15.0-1092-nvidia-lowlatencyUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-azure-lts-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-lowlatency-6.8Upgrade linux-image-xilinxUpgrade linux-image-6.14.0-1020-gcpUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-gkeUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-gke-5.15Upgrade linux-image-oem-20.04bUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-azure-6.8Upgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-aws-lts-22.04Upgrade linux-image-5.15.0-1089-kvmUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-5.15.0-1102-azureUpgrade linux-image-oem-22.04aUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-1038-nvidia-tegra-igx-rtUpgrade linux-image-fips-5.15Upgrade linux-image-5.15.0-163-lowlatency-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-raspi-nolpaeUpgrade linux-image-gcp-5.15Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-gkeop-6.8Upgrade linux-image-gcpUpgrade linux-image-5.15.0-1061-xilinx-zynqmpUpgrade linux-image-aws-fipsUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-genericUpgrade linux-image-6.14.0-1017-oracleUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-oem-22.04Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-azure-6.14Upgrade linux-image-oem-20.04Upgrade linux-image-6.14.0-36-generic-64kUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-5.15.0-1092-intel-iotgUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-gkeopUpgrade linux-image-6.14.0-1017-aws-64kUpgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-1097-gcpUpgrade linux-image-fipsUpgrade linux-image-5.15.0-1091-raspiUpgrade linux-image-nvidiaUpgrade linux-image-generic-5.15Upgrade linux-image-azure-fips-6.8Upgrade linux-image-5.15.0-1097-aws-64kUpgrade linux-image-azure-lts-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-gkeop-5.15Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-5.15.0-1049-nvidia-tegra-rtUpgrade linux-image-oem-22.04dUpgrade linux-image-azure-fipsUpgrade linux-image-azure-5.15Upgrade linux-image-azureUpgrade linux-image-5.15.0-1038-nvidia-tegra-igxUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-intel-iotgUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-5.15Upgrade linux-image-raspiUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1101-azure-fipsUpgrade linux-image-6.14.0-1017-oracle-64kUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-6.14.0-1018-raspiUpgrade linux-image-6.14.0-1017-azureUpgrade linux-image-6.14.0-1017-awsUpgrade linux-image-virtual-5.15Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-realtime-6.14Upgrade linux-image-aws-64k-6.14Upgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-5.15.0-1097-aws-fipsUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-raspi-6.14Upgrade linux-image-oracle-64k-6.14Upgrade linux-image-oracle-5.15Upgrade linux-image-gcp-fipsUpgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-intelUpgrade linux-image-oem-22.04bUpgrade linux-image-oracle-6.8Upgrade linux-image-oem-24.04aUpgrade linux-image-generic-64k-6.8Upgrade linux-image-generic-64k-5.15Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-5.15.0-1093-gkeUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-nvidia-tegraUpgrade linux-image-lowlatency-5.15Upgrade linux-image-ibm-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.14.0-36-genericUpgrade linux-image-5.15.0-163-lowlatencyUpgrade linux-image-xilinx-6.8Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-virtual-6.8Upgrade linux-image-6.14.0-1020-gcp-64kUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-gke-64kUpgrade linux-image-generic-64kUpgrade linux-image-aws-fips-5.15Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-5.15.0-163-generic-64kUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-kvm-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-gcp-6.14Upgrade linux-image-aws-6.8Upgrade linux-image-5.15.0-1049-nvidia-tegraUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-1101-azureUpgrade linux-image-gke-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-virtual-6.14Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-kvmUpgrade linux-image-generic-6.14Upgrade linux-image-aws-6.14Upgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-6.14.0-1016-realtimeUpgrade linux-image-raspi-6.8Upgrade linux-image-raspi-5.15Upgrade linux-image-5.15.0-163-fipsUpgrade linux-image-5.15.0-1097-awsUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-realtime-5.15Upgrade linux-image-oem-22.04cUpgrade linux-image-nvidia-tegra-rt-5.15 | Nov 25, 2025 | Nov 21, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 19, 2025 | Aug 19, 2025 |
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