{"vulnerability": "CVE-2025-21973", "sightings": [{"uuid": "66117da7-4845-4e11-8e25-b652993397a5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-21973", "type": "published-proof-of-concept", "source": "https://t.me/cvedetector/21797", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2025-21973 - Here is the title: ASUS PRIME Z690-P D4 bnxt_en NULL Pointer Dereference Vulnerability\", \n  \"Content\": \"CVE ID : CVE-2025-21973 \nPublished : April 1, 2025, 4:15 p.m. | 1\u00a0hour, 15\u00a0minutes ago \nDescription : In the Linux kernel, the following vulnerability has been resolved:  \n  \neth: bnxt: fix kernel panic in the bnxt_get_queue_stats{rx | tx}  \n  \nWhen qstats-get operation is executed, callbacks of netdev_stats_ops  \nare called. The bnxt_get_queue_stats{rx | tx} collect per-queue stats  \nfrom sw_stats in the rings.  \nBut {rx | tx | cp}_ring are allocated when the interface is up.  \nSo, these rings are not allocated when the interface is down.  \n  \nThe qstats-get is allowed even if the interface is down. However,  \nthe bnxt_get_queue_stats{rx | tx}() accesses cp_ring and tx_ring  \nwithout null check.  \nSo, it needs to avoid accessing rings if the interface is down.  \n  \nReproducer:  \n ip link set $interface down  \n ./cli.py --spec netdev.yaml --dump qstats-get  \nOR  \n ip link set $interface down  \n python ./stats.py  \n  \nSplat looks like:  \n BUG: kernel NULL pointer dereference, address: 0000000000000000  \n #PF: supervisor read access in kernel mode  \n #PF: error_code(0x0000) - not-present page  \n PGD 1680fa067 P4D 1680fa067 PUD 16be3b067 PMD 0  \n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI  \n CPU: 0 UID: 0 PID: 1495 Comm: python3 Not tainted 6.14.0-rc4+ #32 5cd0f999d5a15c574ac72b3e4b907341  \n Hardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021  \n RIP: 0010:bnxt_get_queue_stats_rx+0xf/0x70 [bnxt_en]  \n Code: c6 87 b5 18 00 00 02 eb a2 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 01  \n RSP: 0018:ffffabef43cdb7e0 EFLAGS: 00010282  \n RAX: 0000000000000000 RBX: ffffffffc04c8710 RCX: 0000000000000000  \n RDX: ffffabef43cdb858 RSI: 0000000000000000 RDI: ffff8d504e850000  \n RBP: ffff8d506c9f9c00 R08: 0000000000000004 R09: ffff8d506bcd901c  \n R10: 0000000000000015 R11: ffff8d506bcd9000 R12: 0000000000000000  \n R13: ffffabef43cdb8c0 R14: ffff8d504e850000 R15: 0000000000000000  \n FS:  00007f2c5462b080(0000) GS:ffff8d575f600000(0000) knlGS:0000000000000000  \n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  \n CR2: 0000000000000000 CR3: 0000000167fd0000 CR4: 00000000007506f0  \n PKRU: 55555554  \n Call Trace:  \n    \n  ? __die+0x20/0x70  \n  ? page_fault_oops+0x15a/0x460  \n  ? sched_balance_find_src_group+0x58d/0xd10  \n  ? exc_page_fault+0x6e/0x180  \n  ? asm_exc_page_fault+0x22/0x30  \n  ? bnxt_get_queue_stats_rx+0xf/0x70 [bnxt_en cdd546fd48563c280cfd30e9647efa420db07bf1]  \n  netdev_nl_stats_by_netdev+0x2b1/0x4e0  \n  ? xas_load+0x9/0xb0  \n  ? xas_find+0x183/0x1d0  \n  ? xa_find+0x8b/0xe0  \n  netdev_nl_qstats_get_dumpit+0xbf/0x1e0  \n  genl_dumpit+0x31/0x90  \n  netlink_dump+0x1a8/0x360 \nSeverity: 0.0 | NA \nVisit the link for more details, such as CVSS details, affected products, timeline, and more...\",\n  \"Detection Date\": \"01 Apr 2025\",\n  \"Type\": \"Vulnerability\"\n}\n\ud83d\udd39 t.me/cvedetector \ud83d\udd39", "creation_timestamp": "2025-04-01T19:45:19.000000Z"}]}