CVE-2026-23099 (GCVE-0-2026-23099)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-02-06 16:33
VLAI?
Title
bonding: limit BOND_MODE_8023AD to Ethernet devices
Summary
In the Linux kernel, the following vulnerability has been resolved: bonding: limit BOND_MODE_8023AD to Ethernet devices BOND_MODE_8023AD makes sense for ARPHRD_ETHER only. syzbot reported: BUG: KASAN: global-out-of-bounds in __hw_addr_create net/core/dev_addr_lists.c:63 [inline] BUG: KASAN: global-out-of-bounds in __hw_addr_add_ex+0x25d/0x760 net/core/dev_addr_lists.c:118 Read of size 16 at addr ffffffff8bf94040 by task syz.1.3580/19497 CPU: 1 UID: 0 PID: 19497 Comm: syz.1.3580 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: <TASK> dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:200 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 __hw_addr_create net/core/dev_addr_lists.c:63 [inline] __hw_addr_add_ex+0x25d/0x760 net/core/dev_addr_lists.c:118 __dev_mc_add net/core/dev_addr_lists.c:868 [inline] dev_mc_add+0xa1/0x120 net/core/dev_addr_lists.c:886 bond_enslave+0x2b8b/0x3ac0 drivers/net/bonding/bond_main.c:2180 do_set_master+0x533/0x6d0 net/core/rtnetlink.c:2963 do_setlink+0xcf0/0x41c0 net/core/rtnetlink.c:3165 rtnl_changelink net/core/rtnetlink.c:3776 [inline] __rtnl_newlink net/core/rtnetlink.c:3935 [inline] rtnl_newlink+0x161c/0x1c90 net/core/rtnetlink.c:4072 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6958 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x505/0x820 net/socket.c:2592 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2646 __sys_sendmsg+0x164/0x220 net/socket.c:2678 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x1dc/0x560 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e </TASK> The buggy address belongs to the variable: lacpdu_mcast_addr+0x0/0x40
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 72925dbb0c8c7b16bf922e93c6cc03cbd8c955c4 (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 5063b2cd9b27d35ab788d707d7858ded0acc8f1d (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 80c881e53a4fa0a80fa4bef7bc0ead0e8e88940d (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < ef68afb1bee8d35a18896c27d7358079353d8d8a (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 43dee6f7ef1d228821de1b61c292af3744c8d7da (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < c84fcb79e5dbde0b8d5aeeaf04282d2149aebcf6 (git)
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    Linux Linux Affected: 2.6.24
Unaffected: 0 , < 2.6.24 (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc7 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/bonding/bond_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/bonding/bond_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.24"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.122",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.68",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc7",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.199",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.162",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.122",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.68",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.19-rc7",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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 \u003cTASK\u003e\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 \u003c/TASK\u003e\n\nThe buggy address belongs to the variable:\n lacpdu_mcast_addr+0x0/0x40"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-06T16:33:22.218Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/72925dbb0c8c7b16bf922e93c6cc03cbd8c955c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/5063b2cd9b27d35ab788d707d7858ded0acc8f1d"
        },
        {
          "url": "https://git.kernel.org/stable/c/80c881e53a4fa0a80fa4bef7bc0ead0e8e88940d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef68afb1bee8d35a18896c27d7358079353d8d8a"
        },
        {
          "url": "https://git.kernel.org/stable/c/43dee6f7ef1d228821de1b61c292af3744c8d7da"
        },
        {
          "url": "https://git.kernel.org/stable/c/c84fcb79e5dbde0b8d5aeeaf04282d2149aebcf6"
        }
      ],
      "title": "bonding: limit BOND_MODE_8023AD to Ethernet devices",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23099",
    "datePublished": "2026-02-04T16:08:21.601Z",
    "dateReserved": "2026-01-13T15:37:45.965Z",
    "dateUpdated": "2026-02-06T16:33:22.218Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23099\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-04T17:16:20.777\",\"lastModified\":\"2026-02-06T17:16:25.223\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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 \u003cTASK\u003e\\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 \u003c/TASK\u003e\\n\\nThe buggy address belongs to the variable:\\n lacpdu_mcast_addr+0x0/0x40\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/43dee6f7ef1d228821de1b61c292af3744c8d7da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5063b2cd9b27d35ab788d707d7858ded0acc8f1d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/72925dbb0c8c7b16bf922e93c6cc03cbd8c955c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/80c881e53a4fa0a80fa4bef7bc0ead0e8e88940d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c84fcb79e5dbde0b8d5aeeaf04282d2149aebcf6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef68afb1bee8d35a18896c27d7358079353d8d8a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.