{"id":"CVE-2025-21790","revision":null,"records":[{"revision":"0058f3a4cc14404cb0431ad8df264b29","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-21790","aliases":[],"title":"vxlan: check vxlan_vnigroup_init() return value","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: check vxlan_vnigroup_init() return value\n\nvxlan_init() must check vxlan_vnigroup_init() success\notherwise a crash happens later, spotted by syzbot.\n\nOops: general protection fault, probably for non-canonical address 0xdffffc000000002c: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000160-0x0000000000000167]\nCPU: 0 UID: 0 PID: 7313 Comm: syz-executor147 Not tainted 6.14.0-rc1-syzkaller-00276-g69b54314c975 #0\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\n RIP: 0010:vxlan_vnigroup_uninit+0x89/0x500 drivers/net/vxlan/vxlan_vnifilter.c:912\nCode: 00 48 8b 44 24 08 4c 8b b0 98 41 00 00 49 8d 86 60 01 00 00 48 89 c2 48 89 44 24 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 4d 04 00 00 49 8b 86 60 01 00 00 48 ba 00 00 00\nRSP: 0018:ffffc9000cc1eea8 EFLAGS: 00010202\nRAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff8672effb\nRDX: 000000000000002c RSI: ffffffff8672ecb9 RDI: ffff8880461b4f18\nRBP: ffff8880461b4ef4 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000000 R12: 0000000000020000\nR13: ffff8880461b0d80 R14: 0000000000000000 R15: dffffc0000000000\nFS: 00007fecfa95d6c0(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fecfa95cfb8 CR3: 000000004472c000 CR4: 0000000000352ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \n vxlan_uninit+0x1ab/0x200 drivers/net/vxlan/vxlan_core.c:2942\n unregister_netdevice_many_notify+0x12d6/0x1f30 net/core/dev.c:11824\n unregister_netdevice_many net/core/dev.c:11866 [inline]\n unregister_netdevice_queue+0x307/0x3f0 net/core/dev.c:11736\n register_netdevice+0x1829/0x1eb0 net/core/dev.c:10901\n __vxlan_dev_create+0x7c6/0xa30 drivers/net/vxlan/vxlan_core.c:3981\n vxlan_newlink+0xd1/0x130 drivers/net/vxlan/vxlan_core.c:4407\n rtnl_newlink_create net/core/rtnetlink.c:3795 [inline]\n __rtnl_newlink net/core/rtnetlink.c:3906 [inline]","state":0,"publishedAt":"2025-02-27T02:18:28.375+00:00","modifiedAt":"2026-10-15T01:04:24.596+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/net/vxlan/vxlan_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"f9c4bb0b245cee35ef66f75bf409c9573d934cf9\",\n \"lessThan\": \"79aea5e55156c87dc570e43fcd8bba01b9d6ab3f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f9c4bb0b245cee35ef66f75bf409c9573d934cf9\",\n \"lessThan\": \"a303649b99b64858d62ce7428125d8e71675d2b6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f9c4bb0b245cee35ef66f75bf409c9573d934cf9\",\n \"lessThan\": \"e860f847787fbbf0d8dacd638c019c7c3d4a9bd3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f9c4bb0b245cee35ef66f75bf409c9573d934cf9\",\n \"lessThan\": \"3215f5aafc49aaa993991633833854694e73b439\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f9c4bb0b245cee35ef66f75bf409c9573d934cf9\",\n \"lessThan\": \"5805402dcc56241987bca674a1b4da79a249bab7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/net/vxlan/vxlan_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.18\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.18\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.129\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.79\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.16\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.13.4\",\n \"lessThanOrEqual\": \"6.13.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.14\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/79aea5e55156c87dc570e43fcd8bba01b9d6ab3f","https://git.kernel.org/stable/c/a303649b99b64858d62ce7428125d8e71675d2b6","https://git.kernel.org/stable/c/e860f847787fbbf0d8dacd638c019c7c3d4a9bd3","https://git.kernel.org/stable/c/3215f5aafc49aaa993991633833854694e73b439","https://git.kernel.org/stable/c/5805402dcc56241987bca674a1b4da79a249bab7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-21790","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-21790","identifiers":["CVE-2025-21790"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T19:02:11.0282238+00:00","complete":true,"records":1772,"lastAttemptAt":"2026-11-09T19:02:11.0282238+00:00","lastSuccessAt":"2026-11-09T19:02:11.2511726+00:00","error":null,"lastVerifiedAt":"2026-11-09T19:02:11.2511728+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-da82b7f3c08c0a1c809bacbfac0a567c645c18f0205247304bfc7e4ee4c02653","complete":true,"records":421491,"lastAttemptAt":"2026-11-09T19:02:10.4293016+00:00","lastSuccessAt":"2026-11-09T18:02:17.6122603+00:00","error":null,"lastVerifiedAt":"2026-11-09T19:02:10.4293016+00:00","snapshotPublishedAt":"2026-11-09T17:19:01+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-f1df18dfb77f437e9e2ee1dd548e1f15","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T19:14:35.1855237+00:00","lastSuccessAt":"2026-11-09T19:14:35.178+00:00","error":null,"lastVerifiedAt":"2026-11-09T19:14:35.178+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13398,"expectedIdentifiers":13707,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T19:02:11.0282238+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T19:02:11.0282238+00:00","lastSuccessAt":"2026-11-09T19:02:11.2551731+00:00","error":null,"lastVerifiedAt":"2026-11-09T19:02:11.2551735+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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