CVE-2026-45846 | 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, a
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:
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)
Add a NULL check returning -ESHUTDOWN, consistent with the xmit paths
in the same driver.
- 🔗 git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3f…
- 🔗 git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47…
- 🔗 git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38…
- 🔗 git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d122173262…
- 🔗 git.kernel.org/stable/c/35a115a204be08f97450b0389413e218…
- 🔗 git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b…
- 🔗 git.kernel.org/stable/c/638905520fc4fae6a80991563f264131…
- 🔗 git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424…
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CVE-2026-45846 | 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, a
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