CVE-2026-45846None▾ SunlitIn 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 with…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
Linux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < 31e010a106ff6cd8ccac4bfee547fd3fa1015574Linux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < 55193df8d6d33318435f19572bf5ea47a22eee28Linux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < 51eef9c072aa3405a6823a96ae666d38a3b48750Linux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < a0f4e4e8e0f5e24ddd83e3d1221732621cf34636Linux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < 35a115a204be08f97450b0389413e218268ef4a2Linux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < 74a02921c48fcd35a7881956c9e5c52b86595f5dLinux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < 638905520fc4fae6a80991563f264131545ba3dfLinux >= 571912c69f0ed731bd1e071ade9dc7ca4aa52065 < aa6c6d9ee064aabfede4402fd1283424e649ca19Linux 5.7Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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