{"api_version":"1","generated_at":"2026-06-03T09:12:39+00:00","cve":"CVE-2026-45846","urls":{"html":"https://cve.report/CVE-2026-45846","api":"https://cve.report/api/cve/CVE-2026-45846.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45846","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45846"},"summary":{"title":"bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 11:16:24","updated_at":"2026-06-01 17:17:15"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2","name":"https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19","name":"https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38a3b48750","name":"https://git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38a3b48750","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df","name":"https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47a22eee28","name":"https://git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47a22eee28","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3fa1015574","name":"https://git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3fa1015574","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d","name":"https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636","name":"https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45846","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45846","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 31e010a106ff6cd8ccac4bfee547fd3fa1015574 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 55193df8d6d33318435f19572bf5ea47a22eee28 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 51eef9c072aa3405a6823a96ae666d38a3b48750 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 a0f4e4e8e0f5e24ddd83e3d1221732621cf34636 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 35a115a204be08f97450b0389413e218268ef4a2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 74a02921c48fcd35a7881956c9e5c52b86595f5d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 638905520fc4fae6a80991563f264131545ba3df git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 571912c69f0ed731bd1e071ade9dc7ca4aa52065 aa6c6d9ee064aabfede4402fd1283424e649ca19 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.258 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.141 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.91 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.33 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.10 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"45846","cve":"CVE-2026-45846","epss":"0.000320000","percentile":"0.097530000","score_date":"2026-06-02","updated_at":"2026-06-03 00:08:16"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/bareudp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"31e010a106ff6cd8ccac4bfee547fd3fa1015574","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"},{"lessThan":"55193df8d6d33318435f19572bf5ea47a22eee28","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"},{"lessThan":"51eef9c072aa3405a6823a96ae666d38a3b48750","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"},{"lessThan":"a0f4e4e8e0f5e24ddd83e3d1221732621cf34636","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"},{"lessThan":"35a115a204be08f97450b0389413e218268ef4a2","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"},{"lessThan":"74a02921c48fcd35a7881956c9e5c52b86595f5d","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"},{"lessThan":"638905520fc4fae6a80991563f264131545ba3df","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"},{"lessThan":"aa6c6d9ee064aabfede4402fd1283424e649ca19","status":"affected","version":"571912c69f0ed731bd1e071ade9dc7ca4aa52065","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/bareudp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc2","versionStartIncluding":"5.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-06-01T16:16:39.234Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3fa1015574"},{"url":"https://git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47a22eee28"},{"url":"https://git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38a3b48750"},{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-45846","datePublished":"2026-05-27T09:24:52.122Z","dateReserved":"2026-05-13T15:03:33.078Z","dateUpdated":"2026-06-01T16:16:39.234Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 11:16:24","lastModifiedDate":"2026-06-01 17:17:15","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45846","Ordinal":"1","Title":"bareudp: fix NULL pointer dereference in bareudp_fill_metadata_d","CVE":"CVE-2026-45846","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45846","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"bareudp: fix NULL pointer dereference in bareudp_fill_metadata_d"}]}}}