{"uuid": "307d695d-91af-4290-87dd-905b7ac8a93c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-21790", "type": "seen", "source": "https://t.me/cvedetector/19010", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2025-21790 - Linux Kernel Vxlan Null Pointer Dereference\", \n  \"Content\": \"CVE ID : CVE-2025-21790 \nPublished : Feb. 27, 2025, 3:15 a.m. | 1\u00a0hour, 54\u00a0minutes ago \nDescription : 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 <803c 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] \nSeverity: 0.0 | NA \nVisit the link for more details, such as CVSS details, affected products, timeline, and more...\",\n  \"Detection Date\": \"27 Feb 2025\",\n  \"Type\": \"Vulnerability\"\n}\n\ud83d\udd39 t.me/cvedetector \ud83d\udd39", "creation_timestamp": "2025-02-27T06:11:34.000000Z"}