CVE-2023-52667 (GCVE-0-2023-52667)
Vulnerability from cvelistv5 – Published: 2024-05-17 14:01 – Updated: 2026-08-05 09:10
VLAI
EPSS
VEX
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)
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
2 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) |
guessed | |
| 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) |
guessed |
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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"
},
"vulnrichment": {
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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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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