cve-2024-46857
Vulnerability from cvelistv5
Published
2024-09-27 12:42
Modified
2024-12-19 09:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix bridge mode operations when there are no VFs Currently, trying to set the bridge mode attribute when numvfs=0 leads to a crash: bridge link set dev eth2 hwmode vepa [ 168.967392] BUG: kernel NULL pointer dereference, address: 0000000000000030 [...] [ 168.969989] RIP: 0010:mlx5_add_flow_rules+0x1f/0x300 [mlx5_core] [...] [ 168.976037] Call Trace: [ 168.976188] <TASK> [ 168.978620] _mlx5_eswitch_set_vepa_locked+0x113/0x230 [mlx5_core] [ 168.979074] mlx5_eswitch_set_vepa+0x7f/0xa0 [mlx5_core] [ 168.979471] rtnl_bridge_setlink+0xe9/0x1f0 [ 168.979714] rtnetlink_rcv_msg+0x159/0x400 [ 168.980451] netlink_rcv_skb+0x54/0x100 [ 168.980675] netlink_unicast+0x241/0x360 [ 168.980918] netlink_sendmsg+0x1f6/0x430 [ 168.981162] ____sys_sendmsg+0x3bb/0x3f0 [ 168.982155] ___sys_sendmsg+0x88/0xd0 [ 168.985036] __sys_sendmsg+0x59/0xa0 [ 168.985477] do_syscall_64+0x79/0x150 [ 168.987273] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 168.987773] RIP: 0033:0x7f8f7950f917 (esw->fdb_table.legacy.vepa_fdb is null) The bridge mode is only relevant when there are multiple functions per port. Therefore, prevent setting and getting this setting when there are no VFs. Note that after this change, there are no settings to change on the PF interface using `bridge link` when there are no VFs, so the interface no longer appears in the `bridge link` output.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/505ae01f75f839b54329164bbfecf24cc1361b31Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/52c4beb79e095e0631b5cac46ed48a2aefe51985Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65feee671e37f3b6eda0b6af28f204b5bcf7fa50Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b1d305abef4640af1b4f1b4774d513cd81b10cfcPatch
Impacted products
Vendor Product Version
Linux Linux Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
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   Linux Linux Version: 5.1
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{
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      {
        "metrics": [
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              "content": {
                "id": "CVE-2024-46857",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T13:57:53.606649Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/esw/legacy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "vendor": "Linux",
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              "status": "unaffected",
              "version": "0",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix bridge mode operations when there are no VFs\n\nCurrently, trying to set the bridge mode attribute when numvfs=0 leads to a\ncrash:\n\nbridge link set dev eth2 hwmode vepa\n\n[  168.967392] BUG: kernel NULL pointer dereference, address: 0000000000000030\n[...]\n[  168.969989] RIP: 0010:mlx5_add_flow_rules+0x1f/0x300 [mlx5_core]\n[...]\n[  168.976037] Call Trace:\n[  168.976188]  \u003cTASK\u003e\n[  168.978620]  _mlx5_eswitch_set_vepa_locked+0x113/0x230 [mlx5_core]\n[  168.979074]  mlx5_eswitch_set_vepa+0x7f/0xa0 [mlx5_core]\n[  168.979471]  rtnl_bridge_setlink+0xe9/0x1f0\n[  168.979714]  rtnetlink_rcv_msg+0x159/0x400\n[  168.980451]  netlink_rcv_skb+0x54/0x100\n[  168.980675]  netlink_unicast+0x241/0x360\n[  168.980918]  netlink_sendmsg+0x1f6/0x430\n[  168.981162]  ____sys_sendmsg+0x3bb/0x3f0\n[  168.982155]  ___sys_sendmsg+0x88/0xd0\n[  168.985036]  __sys_sendmsg+0x59/0xa0\n[  168.985477]  do_syscall_64+0x79/0x150\n[  168.987273]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  168.987773] RIP: 0033:0x7f8f7950f917\n\n(esw-\u003efdb_table.legacy.vepa_fdb is null)\n\nThe bridge mode is only relevant when there are multiple functions per\nport. Therefore, prevent setting and getting this setting when there are no\nVFs.\n\nNote that after this change, there are no settings to change on the PF\ninterface using `bridge link` when there are no VFs, so the interface no\nlonger appears in the `bridge link` output."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:24:51.210Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/52c4beb79e095e0631b5cac46ed48a2aefe51985"
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          "url": "https://git.kernel.org/stable/c/65feee671e37f3b6eda0b6af28f204b5bcf7fa50"
        },
        {
          "url": "https://git.kernel.org/stable/c/505ae01f75f839b54329164bbfecf24cc1361b31"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1d305abef4640af1b4f1b4774d513cd81b10cfc"
        }
      ],
      "title": "net/mlx5: Fix bridge mode operations when there are no VFs",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-46857",
    "datePublished": "2024-09-27T12:42:48.545Z",
    "dateReserved": "2024-09-11T15:12:18.291Z",
    "dateUpdated": "2024-12-19T09:24:51.210Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-46857\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-27T13:15:17.277\",\"lastModified\":\"2024-10-01T17:10:29.657\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5: Fix bridge mode operations when there are no VFs\\n\\nCurrently, trying to set the bridge mode attribute when numvfs=0 leads to a\\ncrash:\\n\\nbridge link set dev eth2 hwmode vepa\\n\\n[  168.967392] BUG: kernel NULL pointer dereference, address: 0000000000000030\\n[...]\\n[  168.969989] RIP: 0010:mlx5_add_flow_rules+0x1f/0x300 [mlx5_core]\\n[...]\\n[  168.976037] Call Trace:\\n[  168.976188]  \u003cTASK\u003e\\n[  168.978620]  _mlx5_eswitch_set_vepa_locked+0x113/0x230 [mlx5_core]\\n[  168.979074]  mlx5_eswitch_set_vepa+0x7f/0xa0 [mlx5_core]\\n[  168.979471]  rtnl_bridge_setlink+0xe9/0x1f0\\n[  168.979714]  rtnetlink_rcv_msg+0x159/0x400\\n[  168.980451]  netlink_rcv_skb+0x54/0x100\\n[  168.980675]  netlink_unicast+0x241/0x360\\n[  168.980918]  netlink_sendmsg+0x1f6/0x430\\n[  168.981162]  ____sys_sendmsg+0x3bb/0x3f0\\n[  168.982155]  ___sys_sendmsg+0x88/0xd0\\n[  168.985036]  __sys_sendmsg+0x59/0xa0\\n[  168.985477]  do_syscall_64+0x79/0x150\\n[  168.987273]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  168.987773] RIP: 0033:0x7f8f7950f917\\n\\n(esw-\u003efdb_table.legacy.vepa_fdb is null)\\n\\nThe bridge mode is only relevant when there are multiple functions per\\nport. Therefore, prevent setting and getting this setting when there are no\\nVFs.\\n\\nNote that after this change, there are no settings to change on the PF\\ninterface using `bridge link` when there are no VFs, so the interface no\\nlonger appears in the `bridge link` output.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5: Corregir operaciones en modo puente cuando no hay VF Actualmente, intentar establecer el atributo de modo puente cuando numvfs=0 provoca un bloqueo: bridge link set dev eth2 hwmode vepa [ 168.967392] ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000030 [...] [ 168.969989] RIP: 0010:mlx5_add_flow_rules+0x1f/0x300 [mlx5_core] [...] [ 168.976037] Seguimiento de llamadas: [ 168.976188]  [ 168.978620] _mlx5_eswitch_set_vepa_locked+0x113/0x230 [mlx5_core] [ 168.979074] mlx5_eswitch_set_vepa+0x7f/0xa0 [mlx5_core] [ 168.979471] rtnl_bridge_setlink+0xe9/0x1f0 [ 168.979714] rtnetlink_rcv_msg+0x159/0x400 [ 168.980451] netlink_rcv_skb+0x54/0x100 [ 168.980675] netlink_unicast+0x241/0x360 [ 168.980918] netlink_sendmsg+0x1f6/0x430 [ 168.981162] ____sys_sendmsg+0x3bb/0x3f0 [ 168.982155] ___sys_sendmsg+0x88/0xd0 [ 168.985036] __sys_sendmsg+0x59/0xa0 [ 168.985477] do_syscall_64+0x79/0x150 [ 168.987273] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 168.987773] RIP: 0033:0x7f8f7950f917 (esw-\u0026gt;fdb_table.legacy.vepa_fdb es nulo) El modo puente solo es relevante cuando hay varias funciones por puerto. Por lo tanto, evite configurar y obtener esta configuraci\u00f3n cuando no haya VF. Tenga en cuenta que despu\u00e9s de este cambio, no hay configuraciones para cambiar en la interfaz PF usando \\\"enlace de puente\\\" cuando no hay VF, por lo que la interfaz ya no aparece en la salida del \\\"enlace de puente\\\".\"}],\"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\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.1\",\"versionEndExcluding\":\"6.1.111\",\"matchCriteriaId\":\"C1161E19-E640-48B2-9C43-7B7A206EAFC2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.52\",\"matchCriteriaId\":\"02ADDA94-95BB-484D-8E95-63C0428A28E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.11\",\"matchCriteriaId\":\"F5DB5367-F1F5-4200-B3B3-FDF8AFC3D255\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B77A9280-37E6-49AD-B559-5B23A3B1DC3D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE5298B3-04B4-4F3E-B186-01A58B5C75A6\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/505ae01f75f839b54329164bbfecf24cc1361b31\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/52c4beb79e095e0631b5cac46ed48a2aefe51985\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/65feee671e37f3b6eda0b6af28f204b5bcf7fa50\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b1d305abef4640af1b4f1b4774d513cd81b10cfc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46857\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T13:57:53.606649Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T13:57:54.710Z\"}}], \"cna\": {\"title\": \"net/mlx5: Fix bridge mode operations when there are no VFs\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4b89251de024fb85329e4cbd8fbea551ae6c665c\", \"lessThan\": \"52c4beb79e095e0631b5cac46ed48a2aefe51985\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b89251de024fb85329e4cbd8fbea551ae6c665c\", \"lessThan\": \"65feee671e37f3b6eda0b6af28f204b5bcf7fa50\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b89251de024fb85329e4cbd8fbea551ae6c665c\", \"lessThan\": \"505ae01f75f839b54329164bbfecf24cc1361b31\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4b89251de024fb85329e4cbd8fbea551ae6c665c\", \"lessThan\": \"b1d305abef4640af1b4f1b4774d513cd81b10cfc\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/esw/legacy.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.111\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.52\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/esw/legacy.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/52c4beb79e095e0631b5cac46ed48a2aefe51985\"}, {\"url\": \"https://git.kernel.org/stable/c/65feee671e37f3b6eda0b6af28f204b5bcf7fa50\"}, {\"url\": \"https://git.kernel.org/stable/c/505ae01f75f839b54329164bbfecf24cc1361b31\"}, {\"url\": \"https://git.kernel.org/stable/c/b1d305abef4640af1b4f1b4774d513cd81b10cfc\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5: Fix bridge mode operations when there are no VFs\\n\\nCurrently, trying to set the bridge mode attribute when numvfs=0 leads to a\\ncrash:\\n\\nbridge link set dev eth2 hwmode vepa\\n\\n[  168.967392] BUG: kernel NULL pointer dereference, address: 0000000000000030\\n[...]\\n[  168.969989] RIP: 0010:mlx5_add_flow_rules+0x1f/0x300 [mlx5_core]\\n[...]\\n[  168.976037] Call Trace:\\n[  168.976188]  \u003cTASK\u003e\\n[  168.978620]  _mlx5_eswitch_set_vepa_locked+0x113/0x230 [mlx5_core]\\n[  168.979074]  mlx5_eswitch_set_vepa+0x7f/0xa0 [mlx5_core]\\n[  168.979471]  rtnl_bridge_setlink+0xe9/0x1f0\\n[  168.979714]  rtnetlink_rcv_msg+0x159/0x400\\n[  168.980451]  netlink_rcv_skb+0x54/0x100\\n[  168.980675]  netlink_unicast+0x241/0x360\\n[  168.980918]  netlink_sendmsg+0x1f6/0x430\\n[  168.981162]  ____sys_sendmsg+0x3bb/0x3f0\\n[  168.982155]  ___sys_sendmsg+0x88/0xd0\\n[  168.985036]  __sys_sendmsg+0x59/0xa0\\n[  168.985477]  do_syscall_64+0x79/0x150\\n[  168.987273]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  168.987773] RIP: 0033:0x7f8f7950f917\\n\\n(esw-\u003efdb_table.legacy.vepa_fdb is null)\\n\\nThe bridge mode is only relevant when there are multiple functions per\\nport. Therefore, prevent setting and getting this setting when there are no\\nVFs.\\n\\nNote that after this change, there are no settings to change on the PF\\ninterface using `bridge link` when there are no VFs, so the interface no\\nlonger appears in the `bridge link` output.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:24:51.210Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46857\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:24:51.210Z\", \"dateReserved\": \"2024-09-11T15:12:18.291Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-27T12:42:48.545Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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