CVE-2024-46857 (GCVE-0-2024-46857)
Vulnerability from cvelistv5
Published
2024-09-27 12:42
Modified
2025-11-03 22:19
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
Impacted products
Vendor Product Version
Linux Linux Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
Version: 4b89251de024fb85329e4cbd8fbea551ae6c665c
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-46857",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T13:57:53.606649Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-29T13:57:59.048Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:19:43.251Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "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": [
            {
              "lessThan": "52c4beb79e095e0631b5cac46ed48a2aefe51985",
              "status": "affected",
              "version": "4b89251de024fb85329e4cbd8fbea551ae6c665c",
              "versionType": "git"
            },
            {
              "lessThan": "65feee671e37f3b6eda0b6af28f204b5bcf7fa50",
              "status": "affected",
              "version": "4b89251de024fb85329e4cbd8fbea551ae6c665c",
              "versionType": "git"
            },
            {
              "lessThan": "505ae01f75f839b54329164bbfecf24cc1361b31",
              "status": "affected",
              "version": "4b89251de024fb85329e4cbd8fbea551ae6c665c",
              "versionType": "git"
            },
            {
              "lessThan": "b1d305abef4640af1b4f1b4774d513cd81b10cfc",
              "status": "affected",
              "version": "4b89251de024fb85329e4cbd8fbea551ae6c665c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "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": [
            {
              "status": "affected",
              "version": "5.1"
            },
            {
              "lessThan": "5.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.111",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.52",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.11",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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": "2025-05-04T09:36:04.960Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
        }
      ],
      "title": "net/mlx5: Fix bridge mode operations when there are no VFs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "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": "2025-11-03T22:19:43.251Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "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-1.2.0\"}, \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.111\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.52\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.11\", \"versionStartIncluding\": \"5.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"5.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:36:04.960Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46857\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:36:04.960Z\", \"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"
    }
  }
}


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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.