In the Linux kernel, the following vulnerability has been resolved:
bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()
bareudp_fill_metadata_dst() passes bareudp->sock to
udp_tunnel6_dst_lookup() in the IPv6 path without a NULL check.
The socket is only created in bareudp_open() and NULLed in
bareudp_stop(), so calling this function while the device is down
triggers a NULL dereference via sock->sk.
BUG: kernel NULL pointer dereference, address: 0000000000000018
RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160)
Call Trace:
<TASK>
bareudp_fill_metadata_dst (drivers/net/bareudp.c:532)
do_execute_actions (net/openvswitch/actions.c:901)
ovs_execute_actions (net/openvswitch/actions.c:1589)
ovs_packet_cmd_execute (net/openvswitch/datapath.c:700)
genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)
genl_rcv_msg (net/netlink/genetlink.c:1209)
netlink_rcv_skb (net/netlink/af_netlink.c:2550)
</TASK>
Add a NULL check returning -ESHUTDOWN, consistent with the xmit paths
in the same driver.
References
Configurations
Configuration 1 (hide)
|
History
25 Jun 2026, 21:04
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3fa1015574 - Patch | |
| References | () https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2 - Patch | |
| References | () https://git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38a3b48750 - Patch | |
| References | () https://git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47a22eee28 - Patch | |
| References | () https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df - Patch | |
| References | () https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d - Patch | |
| References | () https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636 - Patch | |
| References | () https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | CWE-476 | |
| First Time |
Linux linux Kernel
Linux |
01 Jun 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
27 May 2026, 11:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-27 11:16
Updated : 2026-06-25 21:04
NVD link : CVE-2026-45846
Mitre link : CVE-2026-45846
CVE.ORG link : CVE-2026-45846
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference