CVE-2025-39937

{"id": "CVE-2025-39937", "cveTags": [], "metrics": {"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}]}, "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": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "184f608a68f96794e8fe58cd5535014d53622cde", "versionType": "git"}, {"status": "affected", "version": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "8793e7a8e1b60131a825457174ed6398111daeb7", "versionType": "git"}, {"status": "affected", "version": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "ada2282259243387e6b6e89239aeb4897e62f051", "versionType": "git"}, {"status": "affected", "version": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "47ade5f9d70b23a119ec20b1c6504864b2543a79", "versionType": "git"}, {"status": "affected", "version": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "689aee35ce671aab752f159e5c8e66d7685e6887", "versionType": "git"}, {"status": "affected", "version": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "21ba85d9d508422ca9e6698463ff9357c928c22d", "versionType": "git"}, {"status": "affected", "version": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d", "versionType": "git"}, {"status": "affected", "version": "7d5e9737efda16535e5b54bd627ef4881d11d31f", "lessThan": "b6f56a44e4c1014b08859dcf04ed246500e310e5", "versionType": "git"}], "programFiles": ["net/rfkill/rfkill-gpio.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.6"}, {"status": "unaffected", "version": "0", "lessThan": "4.6", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.300", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.245", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.194", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.154", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.108", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.49", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.9", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/rfkill/rfkill-gpio.c"], "defaultStatus": "affected"}]}], "published": "2025-10-04T08:15:46.593", "references": [{"url": "https://git.kernel.org/stable/c/184f608a68f96794e8fe58cd5535014d53622cde", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/21ba85d9d508422ca9e6698463ff9357c928c22d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/47ade5f9d70b23a119ec20b1c6504864b2543a79", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/689aee35ce671aab752f159e5c8e66d7685e6887", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8793e7a8e1b60131a825457174ed6398111daeb7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ada2282259243387e6b6e89239aeb4897e62f051", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b6f56a44e4c1014b08859dcf04ed246500e310e5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer\n\nSince commit 7d5e9737efda (\"net: rfkill: gpio: get the name and type from\ndevice property\") rfkill_find_type() gets called with the possibly\nuninitialized \"const char *type_name;\" local variable.\n\nOn x86 systems when rfkill-gpio binds to a \"BCM4752\" or \"LNV4752\"\nacpi_device, the rfkill->type is set based on the ACPI acpi_device_id:\n\n rfkill->type = (unsigned)id->driver_data;\n\nand there is no \"type\" property so device_property_read_string() will fail\nand leave type_name uninitialized, leading to a potential crash.\n\nrfkill_find_type() does accept a NULL pointer, fix the potential crash\nby initializing type_name to NULL.\n\nNote likely sofar this has not been caught because:\n\n1. Not many x86 machines actually have a \"BCM4752\"/\"LNV4752\" acpi_device\n2. The stack happened to contain NULL where type_name is stored"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: rfkill: gpio: Soluciona un fallo debido a la desreferenciaci\u00f3n de un puntero no inicializado\n\nDesde el commit 7d5e9737efda ('net: rfkill: gpio: obtener el nombre y el tipo de la propiedad del dispositivo'), se llama a rfkill_find_type() con la variable local posiblemente no inicializada 'const char *type_name;'.\n\nEn sistemas x86, cuando rfkill-gpio se enlaza a un acpi_device 'BCM4752' o 'LNV4752', el rfkill->type se establece bas\u00e1ndose en el acpi_device_id de ACPI:\n\n rfkill->type = (unsigned)id->driver_data;\n\ny no hay una propiedad 'type', por lo que device_property_read_string() fallar\u00e1 y dejar\u00e1 type_name sin inicializar, lo que lleva a un fallo potencial.\n\nrfkill_find_type() s\u00ed acepta un puntero NULL; soluciona el fallo potencial inicializando type_name a NULL.\n\nTenga en cuenta que probablemente hasta ahora esto no ha sido detectado porque:\n\n1. No muchas m\u00e1quinas x86 realmente tienen un acpi_device 'BCM4752'/'LNV4752'\n2. La pila casualmente conten\u00eda NULL donde se almacena type_name"}], "lastModified": "2026-10-19T21:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7EE80D11-BE25-490A-B037-5E1BC5D3514D", "versionEndExcluding": "5.4.300", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B0E443AF-02FC-45A1-9CD7-3F80A65F1A15", "versionEndExcluding": "5.10.245", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CF862263-DC8D-4324-A52A-DA1D7880B35A", "versionEndExcluding": "5.15.194", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E49CD91E-FC55-45B0-BB63-9AD5F5D70CAA", "versionEndExcluding": "6.1.154", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A7E8EAEE-7731-4996-9578-696255D61EA2", "versionEndExcluding": "6.6.108", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAA033E9-A2C5-4976-A83E-9804D8FB827F", "versionEndExcluding": "6.12.49", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "638DD910-1189-4F5E-98BF-2D436B695112", "versionEndExcluding": "6.16.9", "versionStartIncluding": "6.13"}, {"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"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A4516A6-C12E-42A4-8C0E-68AEF3264504"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}