{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-21716", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21716", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-02-27T02:07:26.779Z", "updatedAt": "2026-10-15T01:03:39.705Z", "importedAt": "2026-10-24T01:57:29.455Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "vxlan: Fix uninit-value in vxlan_vnifilter_dump()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: Fix uninit-value in vxlan_vnifilter_dump()\n\nKMSAN reported an uninit-value access in vxlan_vnifilter_dump() [1].\n\nIf the length of the netlink message payload is less than\nsizeof(struct tunnel_msg), vxlan_vnifilter_dump() accesses bytes\nbeyond the message. This can lead to uninit-value access. Fix this by\nreturning an error in such situations.\n\n[1]\nBUG: KMSAN: uninit-value in vxlan_vnifilter_dump+0x328/0x920 drivers/net/vxlan/vxlan_vnifilter.c:422\n vxlan_vnifilter_dump+0x328/0x920 drivers/net/vxlan/vxlan_vnifilter.c:422\n rtnl_dumpit+0xd5/0x2f0 net/core/rtnetlink.c:6786\n netlink_dump+0x93e/0x15f0 net/netlink/af_netlink.c:2317\n __netlink_dump_start+0x716/0xd60 net/netlink/af_netlink.c:2432\n netlink_dump_start include/linux/netlink.h:340 [inline]\n rtnetlink_dump_start net/core/rtnetlink.c:6815 [inline]\n rtnetlink_rcv_msg+0x1256/0x14a0 net/core/rtnetlink.c:6882\n netlink_rcv_skb+0x467/0x660 net/netlink/af_netlink.c:2542\n rtnetlink_rcv+0x35/0x40 net/core/rtnetlink.c:6944\n netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]\n netlink_unicast+0xed6/0x1290 net/netlink/af_netlink.c:1347\n netlink_sendmsg+0x1092/0x1230 net/netlink/af_netlink.c:1891\n sock_sendmsg_nosec net/socket.c:711 [inline]\n __sock_sendmsg+0x330/0x3d0 net/socket.c:726\n ____sys_sendmsg+0x7f4/0xb50 net/socket.c:2583\n ___sys_sendmsg+0x271/0x3b0 net/socket.c:2637\n __sys_sendmsg net/socket.c:2669 [inline]\n __do_sys_sendmsg net/socket.c:2674 [inline]\n __se_sys_sendmsg net/socket.c:2672 [inline]\n __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2672\n x64_sys_call+0x3878/0x3d90 arch/x86/include/generated/asm/syscalls_64.h:47\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xd9/0x1d0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was created at:\n slab_post_alloc_hook mm/slub.c:4110 [inline]\n slab_alloc_node mm/slub.c:4153 [inline]\n kmem_cache_alloc_node_noprof+0x800/0xe80 mm/slub.c:4205\n kmalloc_reserve+0x13b/0x4b0 net/core/skbuff.c:587\n __alloc_skb+0x347/0x7d0 net/core/skbuff.c:678\n alloc_skb include/linux/skbuff.h:1323 [inline]\n netlink_alloc_large_skb+0xa5/0x280 net/netlink/af_netlink.c:1196\n netlink_sendmsg+0xac9/0x1230 net/netlink/af_netlink.c:1866\n sock_sendmsg_nosec net/socket.c:711 [inline]\n __sock_sendmsg+0x330/0x3d0 net/socket.c:726\n ____sys_sendmsg+0x7f4/0xb50 net/socket.c:2583\n ___sys_sendmsg+0x271/0x3b0 net/socket.c:2637\n __sys_sendmsg net/socket.c:2669 [inline]\n __do_sys_sendmsg net/socket.c:2674 [inline]\n __se_sys_sendmsg net/socket.c:2672 [inline]\n __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2672\n x64_sys_call+0x3878/0x3d90 arch/x86/include/generated/asm/syscalls_64.h:47\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xd9/0x1d0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nCPU: 0 UID: 0 PID: 30991 Comm: syz.4.10630 Not tainted 6.12.0-10694-gc44daa7e3c73 #29\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "f9c4bb0b245cee35ef66f75bf409c9573d934cf9", "status": "affected", "versionType": "git", "lessThan": "cb1de9309a48cc5b771115781eec05075fd67039" }, { "version": "f9c4bb0b245cee35ef66f75bf409c9573d934cf9", "status": "affected", "versionType": "git", "lessThan": "a84d511165d6ba7f331b90ae6b6ce180ec534daa" }, { "version": "f9c4bb0b245cee35ef66f75bf409c9573d934cf9", "status": "affected", "versionType": "git", "lessThan": "f554bce488605d2f70e06eeab5e4d2448c813713" }, { "version": "f9c4bb0b245cee35ef66f75bf409c9573d934cf9", "status": "affected", "versionType": "git", "lessThan": "1693d1fade71646a0731b6b213298cb443d186ea" }, { "version": "f9c4bb0b245cee35ef66f75bf409c9573d934cf9", "status": "affected", "versionType": "git", "lessThan": "5066293b9b7046a906eff60e3949a887ae185a43" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.18" }, { "version": "6.1.129", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.76", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.13", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13.2", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.13.*" }, { "version": "6.14", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }