CVE-2026-45846
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | 31e010a106ff6cd8ccac4bfee547fd3fa1015574 | Unavailable | None listed |
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | 55193df8d6d33318435f19572bf5ea47a22eee28 | Unavailable | None listed |
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | 51eef9c072aa3405a6823a96ae666d38a3b48750 | Unavailable | None listed |
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | a0f4e4e8e0f5e24ddd83e3d1221732621cf34636 | Unavailable | None listed |
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | 35a115a204be08f97450b0389413e218268ef4a2 | Unavailable | None listed |
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | 74a02921c48fcd35a7881956c9e5c52b86595f5d | Unavailable | None listed |
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | 638905520fc4fae6a80991563f264131545ba3df | Unavailable | None listed |
| 571912c69f0ed731bd1e071ade9dc7ca4aa52065 | affected | git | aa6c6d9ee064aabfede4402fd1283424e649ca19 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.7 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.141 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.91 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.33 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.10 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |