{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45846", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.078Z", "datePublished": "2026-05-27T09:24:52.122Z", "dateUpdated": "2026-05-27T09:24:52.122Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T09:24:52.122Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()\n\nbareudp_fill_metadata_dst() passes bareudp->sock to\nudp_tunnel6_dst_lookup() in the IPv6 path without a NULL check.\nThe socket is only created in bareudp_open() and NULLed in\nbareudp_stop(), so calling this function while the device is down\ntriggers a NULL dereference via sock->sk.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000018\n RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160)\n Call Trace:\n <TASK>\n bareudp_fill_metadata_dst (drivers/net/bareudp.c:532)\n do_execute_actions (net/openvswitch/actions.c:901)\n ovs_execute_actions (net/openvswitch/actions.c:1589)\n ovs_packet_cmd_execute (net/openvswitch/datapath.c:700)\n genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)\n genl_rcv_msg (net/netlink/genetlink.c:1209)\n netlink_rcv_skb (net/netlink/af_netlink.c:2550)\n </TASK>\n\nAdd a NULL check returning -ESHUTDOWN, consistent with the xmit paths\nin the same driver."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/bareudp.c"], "versions": [{"version": "571912c69f0ed731bd1e071ade9dc7ca4aa52065", "lessThan": "a0f4e4e8e0f5e24ddd83e3d1221732621cf34636", "status": "affected", "versionType": "git"}, {"version": "571912c69f0ed731bd1e071ade9dc7ca4aa52065", "lessThan": "35a115a204be08f97450b0389413e218268ef4a2", "status": "affected", "versionType": "git"}, {"version": "571912c69f0ed731bd1e071ade9dc7ca4aa52065", "lessThan": "74a02921c48fcd35a7881956c9e5c52b86595f5d", "status": "affected", "versionType": "git"}, {"version": "571912c69f0ed731bd1e071ade9dc7ca4aa52065", "lessThan": "638905520fc4fae6a80991563f264131545ba3df", "status": "affected", "versionType": "git"}, {"version": "571912c69f0ed731bd1e071ade9dc7ca4aa52065", "lessThan": "aa6c6d9ee064aabfede4402fd1283424e649ca19", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/bareudp.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.1-rc2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636"}, {"url": "https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2"}, {"url": "https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d"}, {"url": "https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df"}, {"url": "https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19"}], "title": "bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()\n\nbareudp_fill_metadata_dst() passes bareudp->sock to\nudp_tunnel6_dst_lookup() in the IPv6 path without a NULL check.\nThe socket is only created in bareudp_open() and NULLed in\nbareudp_stop(), so calling this function while the device is down\ntriggers a NULL dereference via sock->sk.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000018\n RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160)\n Call Trace:\n <TASK>\n bareudp_fill_metadata_dst (drivers/net/bareudp.c:532)\n do_execute_actions (net/openvswitch/actions.c:901)\n ovs_execute_actions (net/openvswitch/actions.c:1589)\n ovs_packet_cmd_execute (net/openvswitch/datapath.c:700)\n genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)\n genl_rcv_msg (net/netlink/genetlink.c:1209)\n netlink_rcv_skb (net/netlink/af_netlink.c:2550)\n </TASK>\n\nAdd a NULL check returning -ESHUTDOWN, consistent with the xmit paths\nin the same driver."}], "id": "CVE-2026-45846", "lastModified": "2026-05-27T11:16:24.083", "metrics": {}, "published": "2026-05-27T11:16:24.083", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}