Description
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]
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4c559fb7e111077b56f62ccf833a52d8169cde19, < 082707d3df191bf5bb8801d43e4ce3dea39ca173; >= 2aae1723dea1235ffef183daf0694805297424f6, < a0ead1d648df9c456baec832b494513ef405949a; >= 2d5fc1d492d194aa2986c5a9d8a48a60e9143a72, < 55a253a6753a603e80b95932ca971ba514aa6ce7; >= 974cb0e3e7c963ced06c4e32c5b2884173fa5e01, < 36769b9477491a7af6635863bd950309c1e1b96c; >= 974cb0e3e7c963ced06c4e32c5b2884173fa5e01, < f31dd158580940938f77514b87337a777520185a; >= 974cb0e3e7c963ced06c4e32c5b2884173fa5e01, < 301caa06091af4d5cf056ac8249cbda4e6029c6a; >= 974cb0e3e7c963ced06c4e32c5b2884173fa5e01, < 6cee2c60bd168279852ac7dbe54c2b70d1028644; >= 974cb0e3e7c963ced06c4e32c5b2884173fa5e01, < 1c075b192fe41030457cd4a5f7dea730412bca40; c25352f9ad5dffb4de95069e67891e2aa2e99e50; 5486e8d46560ca2b4d86cbd7d3a66d9913b2ac65; >= 4.9.152, < 4.9.334; >= 4.14.95, < 4.14.300; >= 4.19.17, < 4.19.267; >= 4.4.172, < 4.5; >= 4.20.4, < 4.21 |
| Linux | Linux | 5.0 |
References
- https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173Patch
- https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40Patch
- https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6aPatch
- https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96cPatch
- https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7Patch
- https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644Patch
- https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949aPatch
- https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185aPatch
Timeline
- Published
- May 1, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Modified