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CVE-2021-47265 (GCVE-0-2021-47265)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:19 – Updated: 2026-05-11 13:51
VLAI
Title
RDMA: Verify port when creating flow rule
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA: Verify port when creating flow rule Validate port value provided by the user and with that remove no longer needed validation by the driver. The missing check in the mlx5_ib driver could cause to the below oops. Call trace: _create_flow_rule+0x2d4/0xf28 [mlx5_ib] mlx5_ib_create_flow+0x2d0/0x5b0 [mlx5_ib] ib_uverbs_ex_create_flow+0x4cc/0x624 [ib_uverbs] ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xd4/0x150 [ib_uverbs] ib_uverbs_cmd_verbs.isra.7+0xb28/0xc50 [ib_uverbs] ib_uverbs_ioctl+0x158/0x1d0 [ib_uverbs] do_vfs_ioctl+0xd0/0xaf0 ksys_ioctl+0x84/0xb4 __arm64_sys_ioctl+0x28/0xc4 el0_svc_common.constprop.3+0xa4/0x254 el0_svc_handler+0x84/0xa0 el0_svc+0x10/0x26c Code: b9401260 f9615681 51000400 8b001c20 (f9403c1a)
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:39 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 436f2ad05a0b65b1467ddf51bc68171c381bf844 , < 8dc1b0e0ca204596c50bcd159ee069ae0f998176 (git)
Affected: 436f2ad05a0b65b1467ddf51bc68171c381bf844 , < 2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e (git)
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Linux Linux Affected: 3.12
Unaffected: 0 , < 3.12 (semver)
Unaffected: 5.12.11 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "title": "SUSE CVE CVE-2021-47265",
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    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8dc1b0e0ca204596c50bcd159ee069ae0f998176\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:08.160Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47265\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:39:48.135912Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:15.235Z\"}}], \"cna\": {\"title\": \"RDMA: Verify port when creating flow rule\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"436f2ad05a0b65b1467ddf51bc68171c381bf844\", \"lessThan\": \"8dc1b0e0ca204596c50bcd159ee069ae0f998176\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"436f2ad05a0b65b1467ddf51bc68171c381bf844\", \"lessThan\": \"2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/infiniband/core/uverbs_cmd.c\", \"drivers/infiniband/hw/mlx4/main.c\", \"drivers/infiniband/hw/mlx5/fs.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.12.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/infiniband/core/uverbs_cmd.c\", \"drivers/infiniband/hw/mlx4/main.c\", \"drivers/infiniband/hw/mlx5/fs.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8dc1b0e0ca204596c50bcd159ee069ae0f998176\"}, {\"url\": \"https://git.kernel.org/stable/c/2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRDMA: Verify port when creating flow rule\\n\\nValidate port value provided by the user and with that remove no longer\\nneeded validation by the driver.  The missing check in the mlx5_ib driver\\ncould cause to the below oops.\\n\\nCall trace:\\n  _create_flow_rule+0x2d4/0xf28 [mlx5_ib]\\n  mlx5_ib_create_flow+0x2d0/0x5b0 [mlx5_ib]\\n  ib_uverbs_ex_create_flow+0x4cc/0x624 [ib_uverbs]\\n  ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xd4/0x150 [ib_uverbs]\\n  ib_uverbs_cmd_verbs.isra.7+0xb28/0xc50 [ib_uverbs]\\n  ib_uverbs_ioctl+0x158/0x1d0 [ib_uverbs]\\n  do_vfs_ioctl+0xd0/0xaf0\\n  ksys_ioctl+0x84/0xb4\\n  __arm64_sys_ioctl+0x28/0xc4\\n  el0_svc_common.constprop.3+0xa4/0x254\\n  el0_svc_handler+0x84/0xa0\\n  el0_svc+0x10/0x26c\\n Code: b9401260 f9615681 51000400 8b001c20 (f9403c1a)\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T07:38:31.906Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47265\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T07:38:31.906Z\", \"dateReserved\": \"2024-05-21T13:27:52.126Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T14:19:56.597Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.