CVE-2024-49941

{"id": "CVE-2024-49941", "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}]}, "published": "2024-10-21T18:15:15.780", "references": [{"url": "https://git.kernel.org/stable/c/7b99b5ab885993bff010ebcd93be5e511c56e28a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9ee4b907d7a5d7a53b4ff7727c371ff3d44ccbbb", "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\ngpiolib: Fix potential NULL pointer dereference in gpiod_get_label()\n\nIn `gpiod_get_label()`, it is possible that `srcu_dereference_check()` may\nreturn a NULL pointer, leading to a scenario where `label->str` is accessed\nwithout verifying if `label` itself is NULL.\n\nThis patch adds a proper NULL check for `label` before accessing\n`label->str`. The check for `label->str != NULL` is removed because\n`label->str` can never be NULL if `label` is not NULL.\n\nThis fixes the issue where the label name was being printed as `(efault)`\nwhen dumping the sysfs GPIO file when `label == NULL`."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: gpiolib: Corrige la posible desreferencia de puntero NULL en gpiod_get_label() En `gpiod_get_label()`, es posible que `srcu_dereference_check()` pueda devolver un puntero NULL, lo que lleva a un escenario en el que se accede a `label->str` sin verificar si `label` en s\u00ed es NULL. Este parche agrega una comprobaci\u00f3n NULL adecuada para `label` antes de acceder a `label->str`. La comprobaci\u00f3n para `label->str != NULL` se elimina porque `label->str` nunca puede ser NULL si `label` no es NULL. Esto corrige el problema en el que el nombre de la etiqueta se imprim\u00eda como `(efault)` al volcar el archivo GPIO de sysfs cuando `label == NULL`."}], "lastModified": "2024-10-25T15:17:30.543", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AFC8E2E-533A-4A7D-A42F-F36A6F1445C6", "versionEndExcluding": "6.11.3", "versionStartIncluding": "6.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}