CVE-2025-39834

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: HWS, Fix memory leak in hws_action_get_shared_stc_nic error flow When an invalid stc_type is provided, the function allocates memory for shared_stc but jumps to unlock_and_out without freeing it, causing a memory leak. Fix by jumping to free_shared_stc label instead to ensure proper cleanup.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/051fd8576a2e4e95d5870c5c9f8679c5b16882e4	Patch
https://git.kernel.org/stable/c/a2751e1af5dc8b1a64cfd463576c58617c2573ac
https://git.kernel.org/stable/c/a630f83592cdad1253523a1b760cfe78fef6cd9c	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc3::::::

History

21 Oct 2026, 13:18

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/a2751e1af5dc8b1a64cfd463576c58617c2573ac -

19 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: net/mlx5: HWS, Corrección de fuga de memoria en el flujo de error de hws_action_get_shared_stc_nic Cuando se proporciona un stc_type no válido, la función asigna memoria para shared_stc pero salta a unlock_and_out sin liberarla, causando una fuga de memoria. Se corrige saltando a la etiqueta free_shared_stc en su lugar para asegurar una limpieza adecuada.

Information

Published : 2025-09-16 14:15

Updated : 2026-10-21 13:18

NVD link : CVE-2025-39834

Mitre link : CVE-2025-39834

CVE.ORG link : CVE-2025-39834

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

{"id": "CVE-2025-39834", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39834", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-14T18:18:41.812797Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "504e536d90104c850731840d3fbc95acf251f11b", "lessThan": "a2751e1af5dc8b1a64cfd463576c58617c2573ac", "versionType": "git"}, {"status": "affected", "version": "504e536d90104c850731840d3fbc95acf251f11b", "lessThan": "051fd8576a2e4e95d5870c5c9f8679c5b16882e4", "versionType": "git"}, {"status": "affected", "version": "504e536d90104c850731840d3fbc95acf251f11b", "lessThan": "a630f83592cdad1253523a1b760cfe78fef6cd9c", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/steering/hws/action.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"status": "unaffected", "version": "0", "lessThan": "6.12", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.5", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/steering/hws/action.c"], "defaultStatus": "affected"}]}], "published": "2025-09-16T14:15:51.717", "references": [{"url": "https://git.kernel.org/stable/c/051fd8576a2e4e95d5870c5c9f8679c5b16882e4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a2751e1af5dc8b1a64cfd463576c58617c2573ac", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a630f83592cdad1253523a1b760cfe78fef6cd9c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-401"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, Fix memory leak in hws_action_get_shared_stc_nic error flow\n\nWhen an invalid stc_type is provided, the function allocates memory for\nshared_stc but jumps to unlock_and_out without freeing it, causing a\nmemory leak.\n\nFix by jumping to free_shared_stc label instead to ensure proper cleanup."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/mlx5: HWS, Correcci\u00f3n de fuga de memoria en el flujo de error de hws_action_get_shared_stc_nic\n\nCuando se proporciona un stc_type no v\u00e1lido, la funci\u00f3n asigna memoria para shared_stc pero salta a unlock_and_out sin liberarla, causando una fuga de memoria.\n\nSe corrige saltando a la etiqueta free_shared_stc en su lugar para asegurar una limpieza adecuada."}], "lastModified": "2026-10-21T13:18:14.880", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "37954284-5844-43A0-988C-A8928FBC9ADF", "versionEndExcluding": "6.16.5", "versionStartIncluding": "6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}