{"api_version":"1","generated_at":"2026-07-23T12:55:31+00:00","cve":"CVE-2023-53524","urls":{"html":"https://cve.report/CVE-2023-53524","api":"https://cve.report/api/cve/CVE-2023-53524.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-53524","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-53524"},"summary":{"title":"wifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf\n\nAn integer overflow occurs in the iwl_write_to_user_buf() function,\nwhich is called by the iwl_dbgfs_monitor_data_read() function.\n\nstatic bool iwl_write_to_user_buf(char __user *user_buf, ssize_t count,\n\t\t\t\t  void *buf, ssize_t *size,\n\t\t\t\t  ssize_t *bytes_copied)\n{\n\tint buf_size_left = count - *bytes_copied;\n\n\tbuf_size_left = buf_size_left - (buf_size_left % sizeof(u32));\n\tif (*size > buf_size_left)\n\t\t*size = buf_size_left;\n\nIf the user passes a SIZE_MAX value to the \"ssize_t count\" parameter,\nthe ssize_t count parameter is assigned to \"int buf_size_left\".\nThen compare \"*size\" with \"buf_size_left\" . Here, \"buf_size_left\" is a\nnegative number, so \"*size\" is assigned \"buf_size_left\" and goes into\nthe third argument of the copy_to_user function, causing a heap overflow.\n\nThis is not a security vulnerability because iwl_dbgfs_monitor_data_read()\nis a debugfs operation with 0400 privileges.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-10-01 12:15:56","updated_at":"2026-04-06 13:22:22"},"problem_types":["CWE-190"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"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"}}],"references":[{"url":"https://git.kernel.org/stable/c/0ad8dd870aa187d0c21d032bb2c6433559075eec","name":"https://git.kernel.org/stable/c/0ad8dd870aa187d0c21d032bb2c6433559075eec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/82f877ec9b041edc4c7c509c605cc3393d837bf0","name":"https://git.kernel.org/stable/c/82f877ec9b041edc4c7c509c605cc3393d837bf0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/059e426d666a41e26b184c177c1ca3ee2d6fa1b6","name":"https://git.kernel.org/stable/c/059e426d666a41e26b184c177c1ca3ee2d6fa1b6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/de78456976026102babe66258c228691ca5677c0","name":"https://git.kernel.org/stable/c/de78456976026102babe66258c228691ca5677c0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/eb1ef44efac797b384d361a76e33f77027c29a14","name":"https://git.kernel.org/stable/c/eb1ef44efac797b384d361a76e33f77027c29a14","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/58d1b717879bfeabe09b35e41ad667c79933eb2e","name":"https://git.kernel.org/stable/c/58d1b717879bfeabe09b35e41ad667c79933eb2e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-53524","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53524","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 0ad8dd870aa187d0c21d032bb2c6433559075eec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 059e426d666a41e26b184c177c1ca3ee2d6fa1b6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 82f877ec9b041edc4c7c509c605cc3393d837bf0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 eb1ef44efac797b384d361a76e33f77027c29a14 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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6.3.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 * 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the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf\n\nAn integer overflow occurs in the iwl_write_to_user_buf() function,\nwhich is called by the iwl_dbgfs_monitor_data_read() function.\n\nstatic bool iwl_write_to_user_buf(char __user *user_buf, ssize_t count,\n\t\t\t\t  void *buf, ssize_t *size,\n\t\t\t\t  ssize_t *bytes_copied)\n{\n\tint buf_size_left = count - *bytes_copied;\n\n\tbuf_size_left = buf_size_left - (buf_size_left % sizeof(u32));\n\tif (*size > buf_size_left)\n\t\t*size = buf_size_left;\n\nIf the user passes a SIZE_MAX value to the \"ssize_t count\" parameter,\nthe ssize_t count parameter is assigned to \"int buf_size_left\".\nThen compare \"*size\" with \"buf_size_left\" . Here, \"buf_size_left\" is a\nnegative number, so \"*size\" is assigned \"buf_size_left\" and goes into\nthe third argument of the copy_to_user function, causing a heap overflow.\n\nThis is not a security vulnerability because iwl_dbgfs_monitor_data_read()\nis a debugfs operation with 0400 privileges."}],"providerMetadata":{"dateUpdated":"2026-01-05T10:21:10.054Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0ad8dd870aa187d0c21d032bb2c6433559075eec"},{"url":"https://git.kernel.org/stable/c/059e426d666a41e26b184c177c1ca3ee2d6fa1b6"},{"url":"https://git.kernel.org/stable/c/82f877ec9b041edc4c7c509c605cc3393d837bf0"},{"url":"https://git.kernel.org/stable/c/eb1ef44efac797b384d361a76e33f77027c29a14"},{"url":"https://git.kernel.org/stable/c/de78456976026102babe66258c228691ca5677c0"},{"url":"https://git.kernel.org/stable/c/58d1b717879bfeabe09b35e41ad667c79933eb2e"}],"title":"wifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-53524","datePublished":"2025-10-01T11:46:10.397Z","dateReserved":"2025-10-01T11:39:39.407Z","dateUpdated":"2026-01-05T10:21:10.054Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-10-01 12:15:56","lastModifiedDate":"2026-04-06 13:22:22","problem_types":["CWE-190"],"metrics":{"cvssMetricV31":[{"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}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.4.244","matchCriteriaId":"944F1810-3E3A-44BF-84A8-35D42BDA9FA4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.181","matchCriteriaId":"F5B1726B-45AA-47F2-9261-6DC963E92248"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.113","matchCriteriaId":"F3D5E1B5-AB9D-4ECC-8F11-F3E1BF761E27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.30","matchCriteriaId":"E9430E62-03EA-42E6-9E5E-BD1D5124D107"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.3.4","matchCriteriaId":"26C54BF0-3EED-46D4-92A7-5F07F658B49B"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"53524","Ordinal":"1","Title":"wifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_b","CVE":"CVE-2023-53524","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"53524","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf\n\nAn integer overflow occurs in the iwl_write_to_user_buf() function,\nwhich is called by the iwl_dbgfs_monitor_data_read() function.\n\nstatic bool iwl_write_to_user_buf(char __user *user_buf, ssize_t count,\n\t\t\t\t  void *buf, ssize_t *size,\n\t\t\t\t  ssize_t *bytes_copied)\n{\n\tint buf_size_left = count - *bytes_copied;\n\n\tbuf_size_left = buf_size_left - (buf_size_left % sizeof(u32));\n\tif (*size > buf_size_left)\n\t\t*size = buf_size_left;\n\nIf the user passes a SIZE_MAX value to the \"ssize_t count\" parameter,\nthe ssize_t count parameter is assigned to \"int buf_size_left\".\nThen compare \"*size\" with \"buf_size_left\" . Here, \"buf_size_left\" is a\nnegative number, so \"*size\" is assigned \"buf_size_left\" and goes into\nthe third argument of the copy_to_user function, causing a heap overflow.\n\nThis is not a security vulnerability because iwl_dbgfs_monitor_data_read()\nis a debugfs operation with 0400 privileges.","Type":"Description","Title":"wifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_b"}]}}}