{"id":"DEBIAN-CVE-2025-21974","details":"In the Linux kernel, the following vulnerability has been resolved:  eth: bnxt: return fail if interface is down in bnxt_queue_mem_alloc()  The bnxt_queue_mem_alloc() is called to allocate new queue memory when a queue is restarted. It internally accesses rx buffer descriptor corresponding to the index. The rx buffer descriptor is allocated and set when the interface is up and it's freed when the interface is down. So, if queue is restarted if interface is down, kernel panic occurs.  Splat looks like:  BUG: unable to handle page fault for address: 000000000000b240  #PF: supervisor read access in kernel mode  #PF: error_code(0x0000) - not-present page  PGD 0 P4D 0  Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI  CPU: 3 UID: 0 PID: 1563 Comm: ncdevmem2 Not tainted 6.14.0-rc2+ #9 844ddba6e7c459cafd0bf4db9a3198e  Hardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021  RIP: 0010:bnxt_queue_mem_alloc+0x3f/0x4e0 [bnxt_en]  Code: 41 54 4d 89 c4 4d 69 c0 c0 05 00 00 55 48 89 f5 53 48 89 fb 4c 8d b5 40 05 00 00 48 83 ec 15  RSP: 0018:ffff9dcc83fef9e8 EFLAGS: 00010202  RAX: ffffffffc0457720 RBX: ffff934ed8d40000 RCX: 0000000000000000  RDX: 000000000000001f RSI: ffff934ea508f800 RDI: ffff934ea508f808  RBP: ffff934ea508f800 R08: 000000000000b240 R09: ffff934e84f4b000  R10: ffff9dcc83fefa30 R11: ffff934e84f4b000 R12: 000000000000001f  R13: ffff934ed8d40ac0 R14: ffff934ea508fd40 R15: ffff934e84f4b000  FS:  00007fa73888c740(0000) GS:ffff93559f780000(0000) knlGS:0000000000000000  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 000000000000b240 CR3: 0000000145a2e000 CR4: 00000000007506f0  PKRU: 55555554  Call Trace:   \u003cTASK\u003e   ? __die+0x20/0x70   ? page_fault_oops+0x15a/0x460   ? exc_page_fault+0x6e/0x180   ? asm_exc_page_fault+0x22/0x30   ? __pfx_bnxt_queue_mem_alloc+0x10/0x10 [bnxt_en 7f85e76f4d724ba07471d7e39d9e773aea6597b7]   ? bnxt_queue_mem_alloc+0x3f/0x4e0 [bnxt_en 7f85e76f4d724ba07471d7e39d9e773aea6597b7]   netdev_rx_queue_restart+0xc5/0x240   net_devmem_bind_dmabuf_to_queue+0xf8/0x200   netdev_nl_bind_rx_doit+0x3a7/0x450   genl_family_rcv_msg_doit+0xd9/0x130   genl_rcv_msg+0x184/0x2b0   ? __pfx_netdev_nl_bind_rx_doit+0x10/0x10   ? __pfx_genl_rcv_msg+0x10/0x10   netlink_rcv_skb+0x54/0x100   genl_rcv+0x24/0x40 ...","modified":"2026-08-27T23:05:12.559780228Z","published":"2025-04-01T16:15:28.737Z","upstream":["CVE-2025-21974"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-21974"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-21974.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-21974.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}