5.5

CVE-2022-49862: tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header

Modified
AliasesUBUNTU-CVE-2022-49862DEBIAN-CVE-2022-49862
Published 01-05-2025Last modified 23-05-2026

Vulnerability summary

CVE-2022-49862 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 1
RHSA-2023:2458RHSA-2023:7077SUSE-SU-2025:01983-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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]

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu113 products
  • linuxAll versions (No fix recorded) | < 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • 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 | 5.0
  • linux_kernel≥ 4.4.172, < 4.5 | ≥ 4.9.152, < 4.9.334 | ≥ 4.14.95, < 4.14.300 | ≥ 4.19.17, < 4.19.267 | ≥ 4.20.4, < 5.4.225 | ≥ 5.5, < 5.10.155 | ≥ 5.11, < 5.15.79 | ≥ 5.16, < 6.0.9 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4
Debian1 product
  • linux< 6.0.10-1

3 vendors · 116 products

References

12 links
Show all 12 references