CVE-2022-49862 - Vulnerability Details

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

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]

Published: 2025-05-01

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`4c559fb7e111077b56f62ccf833a52d8169cde19`	affected	< 082707d3df191bf5bb8801d43e4ce3dea39ca173
`2aae1723dea1235ffef183daf0694805297424f6`	affected	< a0ead1d648df9c456baec832b494513ef405949a
`2d5fc1d492d194aa2986c5a9d8a48a60e9143a72`	affected	< 55a253a6753a603e80b95932ca971ba514aa6ce7
`974cb0e3e7c963ced06c4e32c5b2884173fa5e01`	affected	< 36769b9477491a7af6635863bd950309c1e1b96c
`974cb0e3e7c963ced06c4e32c5b2884173fa5e01`	affected	< f31dd158580940938f77514b87337a777520185a
`974cb0e3e7c963ced06c4e32c5b2884173fa5e01`	affected	< 301caa06091af4d5cf056ac8249cbda4e6029c6a
`974cb0e3e7c963ced06c4e32c5b2884173fa5e01`	affected	< 6cee2c60bd168279852ac7dbe54c2b70d1028644
`974cb0e3e7c963ced06c4e32c5b2884173fa5e01`	affected	< 1c075b192fe41030457cd4a5f7dea730412bca40
`c25352f9ad5dffb4de95069e67891e2aa2e99e50`	affected	—
`5486e8d46560ca2b4d86cbd7d3a66d9913b2ac65`	affected	—

Linux

affected

Version	Status	Constraints
`5.0`	affected	—
`0`	unaffected	< 5.0
`4.9.334`	unaffected	≤ 4.9.*
`4.14.300`	unaffected	≤ 4.14.*
`4.19.267`	unaffected	≤ 4.19.*
`5.4.225`	unaffected	≤ 5.4.*
`5.10.155`	unaffected	≤ 5.10.*
`5.15.79`	unaffected	≤ 5.15.*
`6.0.9`	unaffected	≤ 6.0.*
`6.1`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc4::::::

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2025-12905	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]

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00063.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173
https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40
https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a
https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c
https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7
https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644
https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a
https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a
https://lore.kernel.org/linux-cve-announce/2025050147-CVE-2022-49862-04f2@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49862
https://www.cve.org/CVERecord?id=CVE-2022-49862

History

Wed, 01 Oct 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 07 May 2025 13:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
Weaknesses		CWE-908
CPEs		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:6.1:rc1:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc2:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc3:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc4::::::
Vendors & Products		Linux Linux linux Kernel

Fri, 02 May 2025 14:00:00 +0000

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2025050147-CVE-2022-49862-04f2@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2022-49862 https://www.cve.org/CVERecord?id=CVE-2022-49862
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Thu, 01 May 2025 14:30:00 +0000

Type	Values Removed	Values Added
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]
Title		tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
References		https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173 https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40 https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7 https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644 https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-05-01T14:10:15.742Z

Updated: 2026-05-11T19:08:10.861Z

Reserved: 2025-05-01T14:05:17.236Z

Link: CVE-2022-49862

Vulnrichment

Updated: 2025-10-01T14:35:08.426Z

NVD

Status : Modified

Published: 2025-05-01T15:16:11.097

Modified: 2025-10-01T17:15:35.690

Link: CVE-2022-49862

Redhat

Severity : Moderate

Publid Date: 2025-05-01T00:00:00Z

Links: CVE-2022-49862 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

CWE-908

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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