{"cve":"CVE-2026-23099","nvd":{"published":"2026-02-04T17:16:20.777","modified":"2026-10-19T19:17:36.210","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: limit BOND_MODE_8023AD to Ethernet devices\n\nBOND_MODE_8023AD makes sense for ARPHRD_ETHER only.\n\nsyzbot reported:\n\n BUG: KASAN: global-out-of-bounds in __hw_addr_create net/core/dev_addr_lists.c:63 [inline]\n BUG: KASAN: global-out-of-bounds in __hw_addr_add_ex+0x25d/0x760 net/core/dev_addr_lists.c:118\nRead of size 16 at addr ffffffff8bf94040 by task syz.1.3580/19497\n\nCPU: 1 UID: 0 PID: 19497 Comm: syz.1.3580 Tainted: G             L      syzkaller #0 PREEMPT(full)\nTainted: [L]=SOFTLOCKUP\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025\nCall Trace:\n <TASK>\n  dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120\n  print_address_description mm/kasan/report.c:378 [inline]\n  print_report+0xca/0x240 mm/kasan/report.c:482\n  kasan_report+0x118/0x150 mm/kasan/report.c:595\n check_region_inline mm/kasan/generic.c:-1 [inline]\n  kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:200\n  __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105\n  __hw_addr_create net/core/dev_addr_lists.c:63 [inline]\n  __hw_addr_add_ex+0x25d/0x760 net/core/dev_addr_lists.c:118\n  __dev_mc_add net/core/dev_addr_lists.c:868 [inline]\n  dev_mc_add+0xa1/0x120 net/core/dev_addr_lists.c:886\n  bond_enslave+0x2b8b/0x3ac0 drivers/net/bonding/bond_main.c:2180\n  do_set_master+0x533/0x6d0 net/core/rtnetlink.c:2963\n  do_setlink+0xcf0/0x41c0 net/core/rtnetlink.c:3165\n  rtnl_changelink net/core/rtnetlink.c:3776 [inline]\n  __rtnl_newlink net/core/rtnetlink.c:3935 [inline]\n  rtnl_newlink+0x161c/0x1c90 net/core/rtnetlink.c:4072\n  rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6958\n  netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550\n  netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]\n  netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344\n  netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894\n  sock_sendmsg_nosec net/socket.c:727 [inline]\n  __sock_sendmsg+0x21c/0x270 net/socket.c:742\n  ____sys_sendmsg+0x505/0x820 net/socket.c:2592\n  ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2646\n  __sys_sendmsg+0x164/0x220 net/socket.c:2678\n  do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]\n  __do_fast_syscall_32+0x1dc/0x560 arch/x86/entry/syscall_32.c:307\n  do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:332\n entry_SYSENTER_compat_after_hwframe+0x84/0x8e\n </TASK>\n\nThe buggy address belongs to the variable:\n lacpdu_mcast_addr+0x0/0x40","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/19266182b82e9100c799d8a29f5e0452f0bf7703","https://git.kernel.org/stable/c/43dee6f7ef1d228821de1b61c292af3744c8d7da","https://git.kernel.org/stable/c/5063b2cd9b27d35ab788d707d7858ded0acc8f1d","https://git.kernel.org/stable/c/72925dbb0c8c7b16bf922e93c6cc03cbd8c955c4","https://git.kernel.org/stable/c/80c881e53a4fa0a80fa4bef7bc0ead0e8e88940d"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-23099","score":0.0017,"percentile":0.06319,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}