cve-2024-40910
Vulnerability from cvelistv5
Published
2024-07-12 12:20
Modified
2024-11-05 09:32
Severity ?
Summary
ax25: Fix refcount imbalance on inbound connections
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c34fb0bd4a4237592c5ecb5b2e2531900c55774Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/52100fd74ad07b53a4666feafff1cd11436362d3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a723a6c8d4831cc8e2c7b0c9f3f0c010d4671964Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f4df9d6c8d4e4c818252b0419c2165d66eabd4ebPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3c34fb0bd4a4237592c5ecb5b2e2531900c55774Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/52100fd74ad07b53a4666feafff1cd11436362d3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a723a6c8d4831cc8e2c7b0c9f3f0c010d4671964Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f4df9d6c8d4e4c818252b0419c2165d66eabd4ebPatch
Impacted products
Vendor Product Version
Linux Linux Version: 5.18
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T04:39:55.370Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f4df9d6c8d4e4c818252b0419c2165d66eabd4eb"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/52100fd74ad07b53a4666feafff1cd11436362d3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a723a6c8d4831cc8e2c7b0c9f3f0c010d4671964"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3c34fb0bd4a4237592c5ecb5b2e2531900c55774"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-40910",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:06:05.854978Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:34:37.278Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ax25/af_ax25.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f4df9d6c8d4e",
              "status": "affected",
              "version": "9fd75b66b8f6",
              "versionType": "git"
            },
            {
              "lessThan": "52100fd74ad0",
              "status": "affected",
              "version": "9fd75b66b8f6",
              "versionType": "git"
            },
            {
              "lessThan": "a723a6c8d483",
              "status": "affected",
              "version": "9fd75b66b8f6",
              "versionType": "git"
            },
            {
              "lessThan": "3c34fb0bd4a4",
              "status": "affected",
              "version": "9fd75b66b8f6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ax25/af_ax25.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: Fix refcount imbalance on inbound connections\n\nWhen releasing a socket in ax25_release(), we call netdev_put() to\ndecrease the refcount on the associated ax.25 device. However, the\nexecution path for accepting an incoming connection never calls\nnetdev_hold(). This imbalance leads to refcount errors, and ultimately\nto kernel crashes.\n\nA typical call trace for the above situation will start with one of the\nfollowing errors:\n\n    refcount_t: decrement hit 0; leaking memory.\n    refcount_t: underflow; use-after-free.\n\nAnd will then have a trace like:\n\n    Call Trace:\n    \u003cTASK\u003e\n    ? show_regs+0x64/0x70\n    ? __warn+0x83/0x120\n    ? refcount_warn_saturate+0xb2/0x100\n    ? report_bug+0x158/0x190\n    ? prb_read_valid+0x20/0x30\n    ? handle_bug+0x3e/0x70\n    ? exc_invalid_op+0x1c/0x70\n    ? asm_exc_invalid_op+0x1f/0x30\n    ? refcount_warn_saturate+0xb2/0x100\n    ? refcount_warn_saturate+0xb2/0x100\n    ax25_release+0x2ad/0x360\n    __sock_release+0x35/0xa0\n    sock_close+0x19/0x20\n    [...]\n\nOn reboot (or any attempt to remove the interface), the kernel gets\nstuck in an infinite loop:\n\n    unregister_netdevice: waiting for ax0 to become free. Usage count = 0\n\nThis patch corrects these issues by ensuring that we call netdev_hold()\nand ax25_dev_hold() for new connections in ax25_accept(). This makes the\nlogic leading to ax25_accept() match the logic for ax25_bind(): in both\ncases we increment the refcount, which is ultimately decremented in\nax25_release()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-05T09:32:56.953Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f4df9d6c8d4e4c818252b0419c2165d66eabd4eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/52100fd74ad07b53a4666feafff1cd11436362d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/a723a6c8d4831cc8e2c7b0c9f3f0c010d4671964"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c34fb0bd4a4237592c5ecb5b2e2531900c55774"
        }
      ],
      "title": "ax25: Fix refcount imbalance on inbound connections",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-40910",
    "datePublished": "2024-07-12T12:20:49.085Z",
    "dateReserved": "2024-07-12T12:17:45.580Z",
    "dateUpdated": "2024-11-05T09:32:56.953Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40910\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:14.213\",\"lastModified\":\"2024-11-21T09:31:50.417\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nax25: Fix refcount imbalance on inbound connections\\n\\nWhen releasing a socket in ax25_release(), we call netdev_put() to\\ndecrease the refcount on the associated ax.25 device. However, the\\nexecution path for accepting an incoming connection never calls\\nnetdev_hold(). This imbalance leads to refcount errors, and ultimately\\nto kernel crashes.\\n\\nA typical call trace for the above situation will start with one of the\\nfollowing errors:\\n\\n    refcount_t: decrement hit 0; leaking memory.\\n    refcount_t: underflow; use-after-free.\\n\\nAnd will then have a trace like:\\n\\n    Call Trace:\\n    \u003cTASK\u003e\\n    ? show_regs+0x64/0x70\\n    ? __warn+0x83/0x120\\n    ? refcount_warn_saturate+0xb2/0x100\\n    ? report_bug+0x158/0x190\\n    ? prb_read_valid+0x20/0x30\\n    ? handle_bug+0x3e/0x70\\n    ? exc_invalid_op+0x1c/0x70\\n    ? asm_exc_invalid_op+0x1f/0x30\\n    ? refcount_warn_saturate+0xb2/0x100\\n    ? refcount_warn_saturate+0xb2/0x100\\n    ax25_release+0x2ad/0x360\\n    __sock_release+0x35/0xa0\\n    sock_close+0x19/0x20\\n    [...]\\n\\nOn reboot (or any attempt to remove the interface), the kernel gets\\nstuck in an infinite loop:\\n\\n    unregister_netdevice: waiting for ax0 to become free. Usage count = 0\\n\\nThis patch corrects these issues by ensuring that we call netdev_hold()\\nand ax25_dev_hold() for new connections in ax25_accept(). This makes the\\nlogic leading to ax25_accept() match the logic for ax25_bind(): in both\\ncases we increment the refcount, which is ultimately decremented in\\nax25_release().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ax25: corrige el desequilibrio de recuento en conexiones entrantes Al liberar un socket en ax25_release(), llamamos a netdev_put() para disminuir el recuento en el dispositivo ax.25 asociado. Sin embargo, la ruta de ejecuci\u00f3n para aceptar una conexi\u00f3n entrante nunca llama a netdev_hold(). Este desequilibrio conduce a errores de recuento y, en \u00faltima instancia, a fallos del kernel. Un seguimiento de llamada t\u00edpico para la situaci\u00f3n anterior comenzar\u00e1 con uno de los siguientes errores: refcount_t: decrement hit 0; p\u00e9rdida de memoria. refcount_t: desbordamiento insuficiente; use-after-free. Y luego tendr\u00e1 un seguimiento como: Call Trace:  ? show_regs+0x64/0x70? __advertir+0x83/0x120 ? refcount_warn_saturate+0xb2/0x100? report_bug+0x158/0x190? prb_read_valid+0x20/0x30? handle_bug+0x3e/0x70? exc_invalid_op+0x1c/0x70? asm_exc_invalid_op+0x1f/0x30? refcount_warn_saturate+0xb2/0x100? refcount_warn_saturate+0xb2/0x100 ax25_release+0x2ad/0x360 __sock_release+0x35/0xa0 sock_close+0x19/0x20 [...] Al reiniciar (o cualquier intento de eliminar la interfaz), el kernel se atasca en un bucle infinito: unregister_netdevice: esperando ax0 para quedar libre. Recuento de uso = 0 Este parche corrige estos problemas asegurando que llamemos a netdev_hold() y ax25_dev_hold() para nuevas conexiones en ax25_accept(). Esto hace que la l\u00f3gica que conduce a ax25_accept() coincida con la l\u00f3gica de ax25_bind(): en ambos casos incrementamos el refcount, que finalmente disminuye en ax25_release().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"6.1.95\",\"matchCriteriaId\":\"EFECBC56-DE9A-457A-AE19-CA526A30C054\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.35\",\"matchCriteriaId\":\"6F019D15-84C0-416B-8C57-7F51B68992F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.6\",\"matchCriteriaId\":\"0ABBBA1D-F79D-4BDB-AA41-D1EDCC4A6975\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"331C2F14-12C7-45D5-893D-8C52EE38EA10\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3c34fb0bd4a4237592c5ecb5b2e2531900c55774\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/52100fd74ad07b53a4666feafff1cd11436362d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a723a6c8d4831cc8e2c7b0c9f3f0c010d4671964\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f4df9d6c8d4e4c818252b0419c2165d66eabd4eb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3c34fb0bd4a4237592c5ecb5b2e2531900c55774\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/52100fd74ad07b53a4666feafff1cd11436362d3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a723a6c8d4831cc8e2c7b0c9f3f0c010d4671964\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f4df9d6c8d4e4c818252b0419c2165d66eabd4eb\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.