CVE-2022-49862
tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
- Published
- Updated
- Reserved
- Assigned by
- Linux
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]
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 4c559fb7e111077b56f62ccf833a52d8169cde19 – < 082707d3df191bf5bb8801d43e4ce3dea39ca173
- affected 2aae1723dea1235ffef183daf0694805297424f6 – < a0ead1d648df9c456baec832b494513ef405949a
- affected 2d5fc1d492d194aa2986c5a9d8a48a60e9143a72 – < 55a253a6753a603e80b95932ca971ba514aa6ce7
- affected 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 – < 36769b9477491a7af6635863bd950309c1e1b96c
- affected 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 – < f31dd158580940938f77514b87337a777520185a
- affected 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 – < 301caa06091af4d5cf056ac8249cbda4e6029c6a
- affected 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 – < 6cee2c60bd168279852ac7dbe54c2b70d1028644
- affected 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 – < 1c075b192fe41030457cd4a5f7dea730412bca40
- affected c25352f9ad5dffb4de95069e67891e2aa2e99e50
- affected 5486e8d46560ca2b4d86cbd7d3a66d9913b2ac65
- affected 4.9.152 – < 4.9.334
- affected 4.14.95 – < 4.14.300
- affected 4.19.17 – < 4.19.267
- affected 4.4.172 – < 4.5
- affected 4.20.4 – < 4.21
- affected 5.0
- unaffected < 5.0
- unaffected 4.9.334 – ≤ 4.9.*
- unaffected 4.14.300 – ≤ 4.14.*
- unaffected 4.19.267 – ≤ 4.19.*
- unaffected 5.4.225 – ≤ 5.4.*
- unaffected 5.10.155 – ≤ 5.10.*
- unaffected 5.15.79 – ≤ 5.15.*
- unaffected 6.0.9 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References (8)
- https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173 (opens in a new tab)
- https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a (opens in a new tab)
- https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7 (opens in a new tab)
- https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c (opens in a new tab)
- https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a (opens in a new tab)
- https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a (opens in a new tab)
- https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644 (opens in a new tab)
- https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49862)Record last updated .