CVE-2022-49862

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49862
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]

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173 Patch
https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40 Patch
https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a Patch
https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c Patch
https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7 Patch
https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644 Patch
https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a Patch
https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a Patch
Configurations

Configuration 1 (hide)

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:*:*:*:*:*:*
History

07 May 2025, 13:22

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173 - () https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173 - Patch
References () https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40 - () https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40 - Patch
References () https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a - () https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a - Patch
References () https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c - () https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c - Patch
References () https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7 - () https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7 - Patch
References () https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644 - () https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644 - Patch
References () https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a - () https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a - Patch
References () https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a - () https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a - Patch
First Time Linux linux Kernel
Linux
CWE CWE-908
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*

02 May 2025, 13:52

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tipc: corrige la comprobación de longitud del tlv msg->req en tipc_nl_compat_name_table_dump_header Este es un seguimiento del commit 974cb0e3e7c9 ("tipc: corrige uninit-value en tipc_nl_compat_name_table_dump") donde debería haber convertido el tipo sizeof(..) a int para que funcione cuando TLV_GET_DATA_LEN() devuelve un valor negativo. syzbot informó un seguimiento de llamadas debido a esto: ERROR: KMSAN: valor no inicializado en ... 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]

01 May 2025, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-01 15:16

Updated : 2025-05-07 13:22

NVD link : CVE-2022-49862

Mitre link : CVE-2022-49862

CVE.ORG link : CVE-2022-49862

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource