Vulnerability-Lookup

GSD-2024-26663

Vulnerability from gsd - Updated: 2024-02-20 06:02

Details

In the Linux kernel, the following vulnerability has been resolved: tipc: Check the bearer type before calling tipc_udp_nl_bearer_add() syzbot reported the following general protection fault [1]: general protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087] ... RIP: 0010:tipc_udp_is_known_peer+0x9c/0x250 net/tipc/udp_media.c:291 ... Call Trace: <TASK> tipc_udp_nl_bearer_add+0x212/0x2f0 net/tipc/udp_media.c:646 tipc_nl_bearer_add+0x21e/0x360 net/tipc/bearer.c:1089 genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972 genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline] genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b The cause of this issue is that when tipc_nl_bearer_add() is called with the TIPC_NLA_BEARER_UDP_OPTS attribute, tipc_udp_nl_bearer_add() is called even if the bearer is not UDP. tipc_udp_is_known_peer() called by tipc_udp_nl_bearer_add() assumes that the media_ptr field of the tipc_bearer has an udp_bearer type object, so the function goes crazy for non-UDP bearers. This patch fixes the issue by checking the bearer type before calling tipc_udp_nl_bearer_add() in tipc_nl_bearer_add().

Aliases

CVE-2024-26663

JSON

To clipboard

{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-26663"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: Check the bearer type before calling tipc_udp_nl_bearer_add()\n\nsyzbot reported the following general protection fault [1]:\n\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087]\n...\nRIP: 0010:tipc_udp_is_known_peer+0x9c/0x250 net/tipc/udp_media.c:291\n...\nCall Trace:\n \u003cTASK\u003e\n tipc_udp_nl_bearer_add+0x212/0x2f0 net/tipc/udp_media.c:646\n tipc_nl_bearer_add+0x21e/0x360 net/tipc/bearer.c:1089\n genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972\n genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline]\n genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067\n netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076\n netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367\n netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1909\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0xd5/0x180 net/socket.c:745\n ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584\n ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638\n __sys_sendmsg+0x117/0x1e0 net/socket.c:2667\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nThe cause of this issue is that when tipc_nl_bearer_add() is called with\nthe TIPC_NLA_BEARER_UDP_OPTS attribute, tipc_udp_nl_bearer_add() is called\neven if the bearer is not UDP.\n\ntipc_udp_is_known_peer() called by tipc_udp_nl_bearer_add() assumes that\nthe media_ptr field of the tipc_bearer has an udp_bearer type object, so\nthe function goes crazy for non-UDP bearers.\n\nThis patch fixes the issue by checking the bearer type before calling\ntipc_udp_nl_bearer_add() in tipc_nl_bearer_add().",
      "id": "GSD-2024-26663",
      "modified": "2024-02-20T06:02:29.094093Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2024-26663",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "ef20cd4dd163",
                          "version_value": "24ec8f0da93b"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
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                                "version": "4.9"
                              },
                              {
                                "lessThan": "4.9",
                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "4.19.*",
                                "status": "unaffected",
                                "version": "4.19.307",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.4.*",
                                "status": "unaffected",
                                "version": "5.4.269",
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                              {
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                                "status": "unaffected",
                                "version": "5.10.210",
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: Check the bearer type before calling tipc_udp_nl_bearer_add()\n\nsyzbot reported the following general protection fault [1]:\n\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087]\n...\nRIP: 0010:tipc_udp_is_known_peer+0x9c/0x250 net/tipc/udp_media.c:291\n...\nCall Trace:\n \u003cTASK\u003e\n tipc_udp_nl_bearer_add+0x212/0x2f0 net/tipc/udp_media.c:646\n tipc_nl_bearer_add+0x21e/0x360 net/tipc/bearer.c:1089\n genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972\n genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline]\n genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067\n netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076\n netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367\n netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1909\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0xd5/0x180 net/socket.c:745\n ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584\n ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638\n __sys_sendmsg+0x117/0x1e0 net/socket.c:2667\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nThe cause of this issue is that when tipc_nl_bearer_add() is called with\nthe TIPC_NLA_BEARER_UDP_OPTS attribute, tipc_udp_nl_bearer_add() is called\neven if the bearer is not UDP.\n\ntipc_udp_is_known_peer() called by tipc_udp_nl_bearer_add() assumes that\nthe media_ptr field of the tipc_bearer has an udp_bearer type object, so\nthe function goes crazy for non-UDP bearers.\n\nThis patch fixes the issue by checking the bearer type before calling\ntipc_udp_nl_bearer_add() in tipc_nl_bearer_add()."
          }
        ]
      },
      "generator": {
        "engine": "bippy-b4257b672505"
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      "problemtype": {
        "problemtype_data": [
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                "value": "n/a"
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            "url": "https://git.kernel.org/stable/c/3d3a5b31b43515b5752ff282702ca546ec3e48b6"
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            "name": "https://git.kernel.org/stable/c/888e3524be87f3df9fa3c083484e4b62b3e3bb59",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/888e3524be87f3df9fa3c083484e4b62b3e3bb59"
          },
          {
            "name": "https://git.kernel.org/stable/c/0cd331dfd6023640c9669d0592bc0fd491205f87",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/0cd331dfd6023640c9669d0592bc0fd491205f87"
          },
          {
            "name": "https://git.kernel.org/stable/c/3871aa01e1a779d866fa9dfdd5a836f342f4eb87",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/3871aa01e1a779d866fa9dfdd5a836f342f4eb87"
          }
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    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: Check the bearer type before calling tipc_udp_nl_bearer_add()\n\nsyzbot reported the following general protection fault [1]:\n\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087]\n...\nRIP: 0010:tipc_udp_is_known_peer+0x9c/0x250 net/tipc/udp_media.c:291\n...\nCall Trace:\n \u003cTASK\u003e\n tipc_udp_nl_bearer_add+0x212/0x2f0 net/tipc/udp_media.c:646\n tipc_nl_bearer_add+0x21e/0x360 net/tipc/bearer.c:1089\n genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972\n genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline]\n genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067\n netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076\n netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367\n netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1909\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0xd5/0x180 net/socket.c:745\n ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584\n ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638\n __sys_sendmsg+0x117/0x1e0 net/socket.c:2667\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nThe cause of this issue is that when tipc_nl_bearer_add() is called with\nthe TIPC_NLA_BEARER_UDP_OPTS attribute, tipc_udp_nl_bearer_add() is called\neven if the bearer is not UDP.\n\ntipc_udp_is_known_peer() called by tipc_udp_nl_bearer_add() assumes that\nthe media_ptr field of the tipc_bearer has an udp_bearer type object, so\nthe function goes crazy for non-UDP bearers.\n\nThis patch fixes the issue by checking the bearer type before calling\ntipc_udp_nl_bearer_add() in tipc_nl_bearer_add()."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tipc: verifique el tipo de portador antes de llamar a tipc_udp_nl_bearer_add() syzbot inform\u00f3 la siguiente falla de protecci\u00f3n general [1]: falla de protecci\u00f3n general, probablemente para la direcci\u00f3n no can\u00f3nica 0xdffffc0000000010: 0000 [#1 ] PREEMPT SMP KASAN KASAN: null-ptr-deref en el rango [0x00000000000000080-0x0000000000000087] ... RIP: 0010:tipc_udp_is_known_peer+0x9c/0x250 net/tipc/udp_media.c:291 ... Seguimiento de llamadas:  tipc_udp_ nl_bearer_add+ 0x212/0x2f0 net/tipc/udp_media.c:646 tipc_nl_bearer_add+0x21e/0x360 net/tipc/bearer.c:1089 genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972 genl_family_rcv_msg net/netlink/genetlink. c:1052 [en l\u00ednea] genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/ af_netlink.c:1341 [en l\u00ednea] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0xd 5 /0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x 64 arco/x86/ Entry/common.c:52 [en l\u00ednea] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b La causa de este problema es que cuando se llama a tipc_nl_bearer_add() con el atributo TIPC_NLA_BEARER_UDP_OPTS, tipc_udp_nl_bear er_a\u00f1adir () se llama incluso si el portador no es UDP. tipc_udp_is_known_peer() llamado por tipc_udp_nl_bearer_add() supone que el campo media_ptr de tipc_bearer tiene un objeto de tipo udp_bearer, por lo que la funci\u00f3n se vuelve loca para los portadores que no son UDP. Este parche soluciona el problema al verificar el tipo de portador antes de llamar a tipc_udp_nl_bearer_add() en tipc_nl_bearer_add()."
          }
        ],
        "id": "CVE-2024-26663",
        "lastModified": "2024-04-02T12:50:42.233",
        "metrics": {},
        "published": "2024-04-02T07:15:43.287",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0cd331dfd6023640c9669d0592bc0fd491205f87"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/19d7314f2fb9515bdaac9829d4d8eb34edd1fe95"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/24ec8f0da93b8a9fba11600be8a90f0d73fb46f1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3871aa01e1a779d866fa9dfdd5a836f342f4eb87"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3d3a5b31b43515b5752ff282702ca546ec3e48b6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6f70f0b412458c622a12d4292782c8e92e210c2f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/888e3524be87f3df9fa3c083484e4b62b3e3bb59"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c1701ea85ef0ec7be6a1b36c7da69f572ed2fd12"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}

CVE-2024-26663 (GCVE-0-2024-26663)

Vulnerability from cvelistv5 – Published: 2024-04-02 06:22 – Updated: 2026-08-05 11:26

Title

tipc: Check the bearer type before calling tipc_udp_nl_bearer_add()

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-04-03 15:01 UTC

Assigner

Linux mitre root

References

10 references

URL	Tags
https://git.kernel.org/stable/c/24ec8f0da93b8a9fb…
https://git.kernel.org/stable/c/6f70f0b412458c622…
https://git.kernel.org/stable/c/19d7314f2fb9515bd…
https://git.kernel.org/stable/c/c1701ea85ef0ec7be…
https://git.kernel.org/stable/c/3d3a5b31b43515b57…
https://git.kernel.org/stable/c/888e3524be87f3df9…
https://git.kernel.org/stable/c/0cd331dfd6023640c…
https://git.kernel.org/stable/c/3871aa01e1a779d86…
https://lists.debian.org/debian-lts-announce/2024…	x_transferred
https://lists.debian.org/debian-lts-announce/2024…	x_transferred

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < 24ec8f0da93b8a9fba11600be8a90f0d73fb46f1 (git) Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < 6f70f0b412458c622a12d4292782c8e92e210c2f (git) Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < 19d7314f2fb9515bdaac9829d4d8eb34edd1fe95 (git) Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < c1701ea85ef0ec7be6a1b36c7da69f572ed2fd12 (git) Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < 3d3a5b31b43515b5752ff282702ca546ec3e48b6 (git) Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < 888e3524be87f3df9fa3c083484e4b62b3e3bb59 (git) Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < 0cd331dfd6023640c9669d0592bc0fd491205f87 (git) Affected: ef20cd4dd1633987bcf46ac34ace2c8af212361f , < 3871aa01e1a779d866fa9dfdd5a836f342f4eb87 (git)
Linux	Linux	Affected: 4.9 Unaffected: 0 , < 4.9 (semver) Unaffected: 4.19.307 , ≤ 4.19.* (semver) Unaffected: 5.4.269 , ≤ 5.4.* (semver) Unaffected: 5.10.210 , ≤ 5.10.* (semver) Unaffected: 5.15.149 , ≤ 5.15.* (semver) Unaffected: 6.1.78 , ≤ 6.1.* (semver) Unaffected: 6.6.17 , ≤ 6.6.* (semver) Unaffected: 6.7.5 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix)

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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: Check the bearer type before calling tipc_udp_nl_bearer_add()\n\nsyzbot reported the following general protection fault [1]:\n\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087]\n...\nRIP: 0010:tipc_udp_is_known_peer+0x9c/0x250 net/tipc/udp_media.c:291\n...\nCall Trace:\n \u003cTASK\u003e\n tipc_udp_nl_bearer_add+0x212/0x2f0 net/tipc/udp_media.c:646\n tipc_nl_bearer_add+0x21e/0x360 net/tipc/bearer.c:1089\n genl_family_rcv_msg_doit+0x1fc/0x2e0 net/netlink/genetlink.c:972\n genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline]\n genl_rcv_msg+0x561/0x800 net/netlink/genetlink.c:1067\n netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076\n netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367\n netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1909\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0xd5/0x180 net/socket.c:745\n ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584\n ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638\n __sys_sendmsg+0x117/0x1e0 net/socket.c:2667\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nThe cause of this issue is that when tipc_nl_bearer_add() is called with\nthe TIPC_NLA_BEARER_UDP_OPTS attribute, tipc_udp_nl_bearer_add() is called\neven if the bearer is not UDP.\n\ntipc_udp_is_known_peer() called by tipc_udp_nl_bearer_add() assumes that\nthe media_ptr field of the tipc_bearer has an udp_bearer type object, so\nthe function goes crazy for non-UDP bearers.\n\nThis patch fixes the issue by checking the bearer type before calling\ntipc_udp_nl_bearer_add() in tipc_nl_bearer_add()."
        }
      ],
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is reached only through a local generic-netlink `sendmsg` (TIPC_NL_BEARER_ADD), not via remotely received packets, so the attack surface is local.\nAC:L - The attacker controls all preconditions (creating the namespace, a non-UDP bearer, and the malformed netlink message) and can trigger the type confusion deterministically.\nPR:L - TIPC genl ops carry no GENL_ADMIN_PERM check, and even the bearer setup requiring CAP_NET_ADMIN is obtainable by an unprivileged user via user namespaces (unshare -Urn) since TIPC is netns-aware.\nUI:N - The attacker triggers the bug entirely on their own by sending a netlink message; no action from any other user is required.\nS:U - The type confusion and its consequences remain within the kernel\u0027s own security authority; no boundary such as a VM or IOMMU is crossed.\nC:H - The type confusion reads a struct net_device as a udp_bearer and dereferences list pointers taken from adjacent kernel memory, an out-of-type read that can be leveraged for kernel-memory disclosure.\nI:H - Beyond the crash, the confused path can reach list_add_rcu(), writing a pointer into the mis-typed net_device object; type confusion is treated as a High integrity impact.\nA:H - The confusion produces a general protection fault / kernel oops (as reported by syzbot), reliably crashing the kernel."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26663",
    "datePublished": "2024-04-02T06:22:12.537Z",
    "dateReserved": "2024-02-19T14:20:24.148Z",
    "dateUpdated": "2026-08-05T11:26:37.773Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.