In the Linux kernel, the following vulnerability has been resolved:
tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
This is a follow-up for commit 974cb0e3e7c9 ("tipc: fix uninit-value in tipc_nl_compat_name_table_dump") where it should have type casted sizeof(..) to int to work when TLV_GET_DATA_LEN() returns a negative value.
syzbot reported a call trace because of it:
BUG: KMSAN: uninit-value in ... tipc_nl_compat_name_table_dump+0x841/0xea0 net/tipc/netlink_compat.c:934 __tipc_nl_compat_dumpit+0xab2/0x1320 net/tipc/netlink_compat.c:238 tipc_nl_compat_dumpit+0x991/0xb50 net/tipc/netlink_compat.c:321 tipc_nl_compat_recv+0xb6e/0x1640 net/tipc/netlink_compat.c:1324 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline] genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x103f/0x1260 net/netlink/genetlink.c:792 netlink_rcv_skb+0x3a5/0x6c0 net/netlink/af_netlink.c:2501 genl_rcv+0x3c/0x50 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline]
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-livepatch-5.10.155-138.670Upgrade perfUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade python-perfUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel-tools-develUpgrade kernel-livepatch-4.14.301-224.520Upgrade kernel-toolsUpgrade kernel | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | May 5, 2025 | May 1, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libs | Sep 15, 2025 | Aug 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade kernelUpgrade kernel-tools-libs | Aug 13, 2025 | Aug 9, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 1, 2025 |
| Ubuntu | — | Upgrade linuxUpgrade linux-gcp-fipsUpgrade linux-gcpUpgrade linux-hwe-5.4Upgrade linux-gkeopUpgrade linux-intel-iot-realtimeUpgrade linux-ibmUpgrade linux-gcp-5.4Upgrade linux-riscv-5.15Upgrade linux-intel-iotgUpgrade linux-azure-fipsUpgrade linux-aws-fipsUpgrade linux-azure-5.15Upgrade linux-oracle-5.4Upgrade linux-nvidia-tegra-5.15Upgrade linux-awsUpgrade linux-fipsUpgrade linux-ibm-5.4Upgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-gkeUpgrade linux-oracleUpgrade linux-gcp-4.15Upgrade linux-iotUpgrade linux-gcp-5.15Upgrade linux-bluefieldUpgrade linux-realtimeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-5.4Upgrade linux-raspiUpgrade linux-azure-4.15Upgrade linux-xilinx-zynqmpUpgrade linux-kvmUpgrade linux-nvidiaUpgrade linux-aws-hweUpgrade linux-intel-iotg-5.15Upgrade linux-aws-5.15Upgrade linux-hweUpgrade linux-lowlatencyUpgrade linux-raspi-5.4Upgrade linux-oracle-5.15Upgrade linux-aws-5.4 | May 6, 2025 | May 1, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | May 1, 2025 |
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