CVE-2024-41088

{"id": "CVE-2024-41088", "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": "2024-07-29T16:15:04.217", "references": [{"url": "https://git.kernel.org/stable/c/3e72558c1711d524e3150103739ddd06650e291b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6c6b4afa59c2fb4d1759235f866d8caed2aa4729", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d8fb63e46c884c898a38f061c2330f7729e75510", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f926c022ebaabf7963bebf89a97201d66978a025", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-835"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251xfd: fix infinite loop when xmit fails\n\nWhen the mcp251xfd_start_xmit() function fails, the driver stops\nprocessing messages, and the interrupt routine does not return,\nrunning indefinitely even after killing the running application.\n\nError messages:\n[ 441.298819] mcp251xfd spi2.0 can0: ERROR in mcp251xfd_start_xmit: -16\n[ 441.306498] mcp251xfd spi2.0 can0: Transmit Event FIFO buffer not empty. (seq=0x000017c7, tef_tail=0x000017cf, tef_head=0x000017d0, tx_head=0x000017d3).\n... and repeat forever.\n\nThe issue can be triggered when multiple devices share the same SPI\ninterface. And there is concurrent access to the bus.\n\nThe problem occurs because tx_ring->head increments even if\nmcp251xfd_start_xmit() fails. Consequently, the driver skips one TX\npackage while still expecting a response in\nmcp251xfd_handle_tefif_one().\n\nResolve the issue by starting a workqueue to write the tx obj\nsynchronously if err = -EBUSY. In case of another error, decrement\ntx_ring->head, remove skb from the echo stack, and drop the message.\n\n[mkl: use more imperative wording in patch description]"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: mcp251xfd: corrige el bucle infinito cuando falla xmit Cuando falla la funci\u00f3n mcp251xfd_start_xmit(), el controlador deja de procesar mensajes y la rutina de interrupci\u00f3n no regresa, ejecut\u00e1ndose indefinidamente incluso despu\u00e9s de finalizar el aplicaci\u00f3n en ejecuci\u00f3n. Mensajes de error: [441.298819] mcp251xfd spi2.0 can0: ERROR en mcp251xfd_start_xmit: -16 [441.306498] mcp251xfd spi2.0 can0: El b\u00fafer FIFO de evento de transmisi\u00f3n no est\u00e1 vac\u00edo. (seq=0x000017c7, tef_tail=0x000017cf, tef_head=0x000017d0, tx_head=0x000017d3). ... y repetir para siempre. El problema puede desencadenarse cuando varios dispositivos comparten la misma interfaz SPI. Y hay acceso simult\u00e1neo al autob\u00fas. El problema ocurre porque tx_ring->head incrementa incluso si falla mcp251xfd_start_xmit(). En consecuencia, el controlador omite un paquete TX mientras espera una respuesta en mcp251xfd_handle_tefif_one(). Resuelva el problema iniciando una cola de trabajo para escribir el obj tx sincr\u00f3nicamente si err = -EBUSY. En caso de otro error, disminuya tx_ring->head, elimine skb de la pila de eco y elimine el mensaje. [mkl: utilice una redacci\u00f3n m\u00e1s imperativa en la descripci\u00f3n del parche]"}], "lastModified": "2024-08-22T13:16:08.143", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D1B1C19-B25B-4A8A-904D-D71AC2162CE0", "versionEndExcluding": "6.1.97", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D72E033B-5323-4C4D-8818-36E1EBC3535F", "versionEndExcluding": "6.6.37", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E95105F2-32E3-4C5F-9D18-7AEFD0E6275C", "versionEndExcluding": "6.9.8", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}