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CVE-2023-52667 (GCVE-0-2023-52667)

Vulnerability from cvelistv5 – Published: 2024-05-17 14:01 – Updated: 2026-08-05 09:10
VLAI
Title
net/mlx5e: fix a potential double-free in fs_any_create_groups
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: fix a potential double-free in fs_any_create_groups When kcalloc() for ft->g succeeds but kvzalloc() for in fails, fs_any_create_groups() will free ft->g. However, its caller fs_any_create_table() will free ft->g again through calling mlx5e_destroy_flow_table(), which will lead to a double-free. Fix this by setting ft->g to NULL in fs_any_create_groups().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:42 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6 , < 72a729868592752b5a294d27453da264106983b1 (git)
Affected: 0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6 , < b2fa86b2aceb4bc9ada51cea90f61546d7512cbe (git)
Affected: 0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6 , < 2897c981ee63e1be5e530b1042484626a10b26d8 (git)
Affected: 0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6 , < 65a4ade8a6d205979292e88beeb6a626ddbd4779 (git)
Affected: 0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6 , < aef855df7e1bbd5aa4484851561211500b22707e (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.149 , ≤ 5.15.* (semver)
Unaffected: 6.1.76 , ≤ 6.1.* (semver)
Unaffected: 6.6.15 , ≤ 6.6.* (semver)
Unaffected: 6.7.3 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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However, its caller\\nfs_any_create_table() will free ft-\u003eg again through calling\\nmlx5e_destroy_flow_table(), which will lead to a double-free.\\nFix this by setting ft-\u003eg to NULL in fs_any_create_groups().\"},{\"lang\":\"es\",\"value\":\" En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5e: corrige una posible double free en fs_any_create_groups Cuando kcalloc() para ft-\u0026gt;g tiene \u00e9xito pero kvzalloc() para in falla, fs_any_create_groups() liberar\u00e1 ft-\u0026gt; gramo. Sin embargo, su llamador fs_any_create_table() liberar\u00e1 ft-\u0026gt;g nuevamente llamando a mlx5e_destroy_flow_table(), lo que conducir\u00e1 a un double free. Solucione este problema configurando ft-\u0026gt;g en NULL en fs_any_create_groups().\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\",\"lessThan\":\"72a729868592752b5a294d27453da264106983b1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\",\"lessThan\":\"b2fa86b2aceb4bc9ada51cea90f61546d7512cbe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\",\"lessThan\":\"2897c981ee63e1be5e530b1042484626a10b26d8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\",\"lessThan\":\"65a4ade8a6d205979292e88beeb6a626ddbd4779\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\",\"lessThan\":\"aef855df7e1bbd5aa4484851561211500b22707e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.13\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.13\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.149\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.76\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.15\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7.3\",\"lessThanOrEqual\":\"6.7.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T15:42:12.540016Z\",\"id\":\"CVE-2023-52667\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:25:59+00:00",
      "cve": "CVE-2023-52667",
      "id": "CVE-2023-52667",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "929",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "23",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/mlx5e: fix a potential double-free in fs_any_create_groups",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52667.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T12:41:34Z",
      "cve": "CVE-2023-52667",
      "id": "CVE-2023-52667",
      "initial_release_date": "2024-05-21T02:02:10Z",
      "product_status:known_affected": "330",
      "product_status:known_not_affected": "237",
      "product_status:recommended": "704",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-52667",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52667.json",
      "version": "111"
    },
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a local attacker can drive that GFP_KERNEL failure via memory pressure, after which the double-free in mlx5e_destroy_flow_table() is fully deterministic with no race outside attacker control.\\nPR:L - An unprivileged local account can supply the memory-pressure half of the condition while ordinary admin/PTP hwstamp or channel reopen activity hits the path; alternatively, CAP_NET_ADMIN checked via ns_capable(net-\u003euser_ns) on an mlx5 VF in a tenant netns is Low, not init-ns root.\\nUI:N - No separate victim action is required; the attacker induces the failing allocation (and/or issues the hwstamp/ethtool configuration themselves), and the faulty cleanup runs automatically in fs_any_create_table()\u0027s error path.\\nS:U - Impact is confined to host-kernel slab/mlx5e state under a single security authority; the defect does not cross a VM, IOMMU, or sandbox boundary.\\nC:H - ft-\u003eg is a 16-byte (2-pointer) kmalloc object; under the same memory pressure that triggers the bug it can be reallocated between the two kfree()s, so freelist aliasing from the double-free yields an arbitrary kernel read/disclosure primitive.\\nI:H - Double-free freelist corruption lets attacker-controlled data overwrite a live kmalloc-16 object and/or redirect subsequent allocations, providing a write and control-flow hijack primitive suitable for privilege escalation.\\nA:H - The second kfree() of the already-freed pointer trips SLUB double-free detection or corrupts the freelist, causing a kernel BUG/oops/panic and denying service on the host or NIC bring-up path.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\", \"lessThan\": \"72a729868592752b5a294d27453da264106983b1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\", \"lessThan\": \"b2fa86b2aceb4bc9ada51cea90f61546d7512cbe\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\", \"lessThan\": \"2897c981ee63e1be5e530b1042484626a10b26d8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\", \"lessThan\": \"65a4ade8a6d205979292e88beeb6a626ddbd4779\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6\", \"lessThan\": \"aef855df7e1bbd5aa4484851561211500b22707e\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.13\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.13\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.76\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/72a729868592752b5a294d27453da264106983b1\"}, {\"url\": \"https://git.kernel.org/stable/c/b2fa86b2aceb4bc9ada51cea90f61546d7512cbe\"}, {\"url\": \"https://git.kernel.org/stable/c/2897c981ee63e1be5e530b1042484626a10b26d8\"}, {\"url\": \"https://git.kernel.org/stable/c/65a4ade8a6d205979292e88beeb6a626ddbd4779\"}, {\"url\": \"https://git.kernel.org/stable/c/aef855df7e1bbd5aa4484851561211500b22707e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5e: fix a potential double-free in fs_any_create_groups\\n\\nWhen kcalloc() for ft-\u003eg succeeds but kvzalloc() for in fails,\\nfs_any_create_groups() will free ft-\u003eg. 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  }
}



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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

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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.