{"api_version":"1","generated_at":"2026-08-03T20:49:34+00:00","cve":"CVE-2025-23155","urls":{"html":"https://cve.report/CVE-2025-23155","api":"https://cve.report/api/cve/CVE-2025-23155.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-23155","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-23155"},"summary":{"title":"net: stmmac: Fix accessing freed irq affinity_hint","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Fix accessing freed irq affinity_hint\n\nIn stmmac_request_irq_multi_msi(), a pointer to the stack variable\ncpu_mask is passed to irq_set_affinity_hint(). This value is stored in\nirq_desc->affinity_hint, but once stmmac_request_irq_multi_msi()\nreturns, the pointer becomes dangling.\n\nThe affinity_hint is exposed via procfs with S_IRUGO permissions,\nallowing any unprivileged process to read it. Accessing this stale\npointer can lead to:\n\n- a kernel oops or panic if the referenced memory has been released and\n  unmapped, or\n- leakage of kernel data into userspace if the memory is re-used for\n  other purposes.\n\nAll platforms that use stmmac with PCI MSI (Intel, Loongson, etc) are\naffected.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-05-01 13:15:51","updated_at":"2026-07-30 06:22:17"},"problem_types":["NVD-CWE-Other"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/2fbf67ddb8a0d0efc00d2df496a9843ec318d48b","name":"https://git.kernel.org/stable/c/2fbf67ddb8a0d0efc00d2df496a9843ec318d48b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9e51a6a44e2c4de780a26e8fe110d708e806a8cd","name":"https://git.kernel.org/stable/c/9e51a6a44e2c4de780a26e8fe110d708e806a8cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e148266e104fce396ad624079a6812ac3a9982ef","name":"https://git.kernel.org/stable/c/e148266e104fce396ad624079a6812ac3a9982ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/442312c2a90d60c7a5197246583fa91d9e579985","name":"https://git.kernel.org/stable/c/442312c2a90d60c7a5197246583fa91d9e579985","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/960dab23f6d405740c537d095f90a4ee9ddd9285","name":"https://git.kernel.org/stable/c/960dab23f6d405740c537d095f90a4ee9ddd9285","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef","name":"https://git.kernel.org/stable/c/c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-23155","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-23155","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e 2fbf67ddb8a0d0efc00d2df496a9843ec318d48b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e 960dab23f6d405740c537d095f90a4ee9ddd9285 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e 442312c2a90d60c7a5197246583fa91d9e579985 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e e148266e104fce396ad624079a6812ac3a9982ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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6.14.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 * 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the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Fix accessing freed irq affinity_hint\n\nIn stmmac_request_irq_multi_msi(), a pointer to the stack variable\ncpu_mask is passed to irq_set_affinity_hint(). This value is stored in\nirq_desc->affinity_hint, but once stmmac_request_irq_multi_msi()\nreturns, the pointer becomes dangling.\n\nThe affinity_hint is exposed via procfs with S_IRUGO permissions,\nallowing any unprivileged process to read it. Accessing this stale\npointer can lead to:\n\n- a kernel oops or panic if the referenced memory has been released and\n  unmapped, or\n- leakage of kernel data into userspace if the memory is re-used for\n  other purposes.\n\nAll platforms that use stmmac with PCI MSI (Intel, Loongson, etc) are\naffected."}],"metrics":[{"cvssV3_1":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-30T05:48:49.097Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2fbf67ddb8a0d0efc00d2df496a9843ec318d48b"},{"url":"https://git.kernel.org/stable/c/960dab23f6d405740c537d095f90a4ee9ddd9285"},{"url":"https://git.kernel.org/stable/c/442312c2a90d60c7a5197246583fa91d9e579985"},{"url":"https://git.kernel.org/stable/c/e148266e104fce396ad624079a6812ac3a9982ef"},{"url":"https://git.kernel.org/stable/c/9e51a6a44e2c4de780a26e8fe110d708e806a8cd"},{"url":"https://git.kernel.org/stable/c/c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef"}],"title":"net: stmmac: Fix accessing freed irq affinity_hint","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-23155","datePublished":"2025-05-01T12:55:41.607Z","dateReserved":"2025-01-11T14:28:41.514Z","dateUpdated":"2026-07-30T05:48:49.097Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-05-01 13:15:51","lastModifiedDate":"2026-07-30 06:22:17","problem_types":["NVD-CWE-Other"],"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:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.2},{"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:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.12.36","matchCriteriaId":"573B9A24-9753-4B70-B2CD-DC8874B067AC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.13.12","matchCriteriaId":"4A475784-BF3B-4514-81EE-49C8522FB24A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.14.3","matchCriteriaId":"483E2E15-2135-4EC6-AB64-16282C5EF704"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"23155","Ordinal":"1","Title":"net: stmmac: Fix accessing freed irq affinity_hint","CVE":"CVE-2025-23155","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"23155","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: Fix accessing freed irq affinity_hint\n\nIn stmmac_request_irq_multi_msi(), a pointer to the stack variable\ncpu_mask is passed to irq_set_affinity_hint(). This value is stored in\nirq_desc->affinity_hint, but once stmmac_request_irq_multi_msi()\nreturns, the pointer becomes dangling.\n\nThe affinity_hint is exposed via procfs with S_IRUGO permissions,\nallowing any unprivileged process to read it. Accessing this stale\npointer can lead to:\n\n- a kernel oops or panic if the referenced memory has been released and\n  unmapped, or\n- leakage of kernel data into userspace if the memory is re-used for\n  other purposes.\n\nAll platforms that use stmmac with PCI MSI (Intel, Loongson, etc) are\naffected.","Type":"Description","Title":"net: stmmac: Fix accessing freed irq affinity_hint"}]}}}