CVE-2023-53105 (GCVE-0-2023-53105)
Vulnerability from cvelistv5
Published
2025-05-02 15:55
Modified
2025-05-04 07:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix cleanup null-ptr deref on encap lock During module is unloaded while a peer tc flow is still offloaded, first the peer uplink rep profile is changed to a nic profile, and so neigh encap lock is destroyed. Next during unload, the VF reps netdevs are unregistered which causes the original non-peer tc flow to be deleted, which deletes the peer flow. The peer flow deletion detaches the encap entry and try to take the already destroyed encap lock, causing the below trace. Fix this by clearing peer flows during tc eswitch cleanup (mlx5e_tc_esw_cleanup()). Relevant trace: [ 4316.837128] BUG: kernel NULL pointer dereference, address: 00000000000001d8 [ 4316.842239] RIP: 0010:__mutex_lock+0xb5/0xc40 [ 4316.851897] Call Trace: [ 4316.852481] <TASK> [ 4316.857214] mlx5e_rep_neigh_entry_release+0x93/0x790 [mlx5_core] [ 4316.858258] mlx5e_rep_encap_entry_detach+0xa7/0xf0 [mlx5_core] [ 4316.859134] mlx5e_encap_dealloc+0xa3/0xf0 [mlx5_core] [ 4316.859867] clean_encap_dests.part.0+0x5c/0xe0 [mlx5_core] [ 4316.860605] mlx5e_tc_del_fdb_flow+0x32a/0x810 [mlx5_core] [ 4316.862609] __mlx5e_tc_del_fdb_peer_flow+0x1a2/0x250 [mlx5_core] [ 4316.863394] mlx5e_tc_del_flow+0x(/0x630 [mlx5_core] [ 4316.864090] mlx5e_flow_put+0x5f/0x100 [mlx5_core] [ 4316.864771] mlx5e_delete_flower+0x4de/0xa40 [mlx5_core] [ 4316.865486] tc_setup_cb_reoffload+0x20/0x80 [ 4316.865905] fl_reoffload+0x47c/0x510 [cls_flower] [ 4316.869181] tcf_block_playback_offloads+0x91/0x1d0 [ 4316.869649] tcf_block_unbind+0xe7/0x1b0 [ 4316.870049] tcf_block_offload_cmd.isra.0+0x1ee/0x270 [ 4316.879266] tcf_block_offload_unbind+0x61/0xa0 [ 4316.879711] __tcf_block_put+0xa4/0x310
References
Impacted products
Vendor Product Version
Linux Linux Version: 04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d
Version: 04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d
Version: 04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b7350f8dbe0c2a1d4d3ad7c35b610abd3cb91750",
              "status": "affected",
              "version": "04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d",
              "versionType": "git"
            },
            {
              "lessThan": "01fdaea410787fe372daeaeda93a29ed0606d334",
              "status": "affected",
              "version": "04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d",
              "versionType": "git"
            },
            {
              "lessThan": "c9668f0b1d28570327dbba189f2c61f6f9e43ae7",
              "status": "affected",
              "version": "04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en_tc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.21",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.8",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix cleanup null-ptr deref on encap lock\n\nDuring module is unloaded while a peer tc flow is still offloaded,\nfirst the peer uplink rep profile is changed to a nic profile, and so\nneigh encap lock is destroyed. Next during unload, the VF reps netdevs\nare unregistered which causes the original non-peer tc flow to be deleted,\nwhich deletes the peer flow. The peer flow deletion detaches the encap\nentry and try to take the already destroyed encap lock, causing the\nbelow trace.\n\nFix this by clearing peer flows during tc eswitch cleanup\n(mlx5e_tc_esw_cleanup()).\n\nRelevant trace:\n[ 4316.837128] BUG: kernel NULL pointer dereference, address: 00000000000001d8\n[ 4316.842239] RIP: 0010:__mutex_lock+0xb5/0xc40\n[ 4316.851897] Call Trace:\n[ 4316.852481]  \u003cTASK\u003e\n[ 4316.857214]  mlx5e_rep_neigh_entry_release+0x93/0x790 [mlx5_core]\n[ 4316.858258]  mlx5e_rep_encap_entry_detach+0xa7/0xf0 [mlx5_core]\n[ 4316.859134]  mlx5e_encap_dealloc+0xa3/0xf0 [mlx5_core]\n[ 4316.859867]  clean_encap_dests.part.0+0x5c/0xe0 [mlx5_core]\n[ 4316.860605]  mlx5e_tc_del_fdb_flow+0x32a/0x810 [mlx5_core]\n[ 4316.862609]  __mlx5e_tc_del_fdb_peer_flow+0x1a2/0x250 [mlx5_core]\n[ 4316.863394]  mlx5e_tc_del_flow+0x(/0x630 [mlx5_core]\n[ 4316.864090]  mlx5e_flow_put+0x5f/0x100 [mlx5_core]\n[ 4316.864771]  mlx5e_delete_flower+0x4de/0xa40 [mlx5_core]\n[ 4316.865486]  tc_setup_cb_reoffload+0x20/0x80\n[ 4316.865905]  fl_reoffload+0x47c/0x510 [cls_flower]\n[ 4316.869181]  tcf_block_playback_offloads+0x91/0x1d0\n[ 4316.869649]  tcf_block_unbind+0xe7/0x1b0\n[ 4316.870049]  tcf_block_offload_cmd.isra.0+0x1ee/0x270\n[ 4316.879266]  tcf_block_offload_unbind+0x61/0xa0\n[ 4316.879711]  __tcf_block_put+0xa4/0x310"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:49:57.013Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b7350f8dbe0c2a1d4d3ad7c35b610abd3cb91750"
        },
        {
          "url": "https://git.kernel.org/stable/c/01fdaea410787fe372daeaeda93a29ed0606d334"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9668f0b1d28570327dbba189f2c61f6f9e43ae7"
        }
      ],
      "title": "net/mlx5e: Fix cleanup null-ptr deref on encap lock",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53105",
    "datePublished": "2025-05-02T15:55:46.606Z",
    "dateReserved": "2025-05-02T15:51:43.553Z",
    "dateUpdated": "2025-05-04T07:49:57.013Z",
    "state": "PUBLISHED"
  },
  "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.