{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-29T16:24:00.204","vulnerabilities":[{"cve":{"id":"CVE-2024-44951","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-09-04T19:15:30.153","lastModified":"2024-10-09T14:27:43.973","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: sc16is7xx: fix TX fifo corruption\n\nSometimes, when a packet is received on channel A at almost the same time\nas a packet is about to be transmitted on channel B, we observe with a\nlogic analyzer that the received packet on channel A is transmitted on\nchannel B. In other words, the Tx buffer data on channel B is corrupted\nwith data from channel A.\n\nThe problem appeared since commit 4409df5866b7 (\"serial: sc16is7xx: change\nEFR lock to operate on each channels\"), which changed the EFR locking to\noperate on each channel instead of chip-wise.\n\nThis commit has introduced a regression, because the EFR lock is used not\nonly to protect the EFR registers access, but also, in a very obscure and\nundocumented way, to protect access to the data buffer, which is shared by\nthe Tx and Rx handlers, but also by each channel of the IC.\n\nFix this regression first by switching to kfifo_out_linear_ptr() in\nsc16is7xx_handle_tx() to eliminate the need for a shared Rx/Tx buffer.\n\nSecondly, replace the chip-wise Rx buffer with a separate Rx buffer for\neach channel."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: serial: sc16is7xx: fix TX fifo democracy A veces, cuando se recibe un paquete en el canal A casi al mismo tiempo que se va a transmitir un paquete en el canal B, observamos con un analizador lógico que el paquete recibido en el canal A se transmite en el canal B. En otras palabras, los datos del búfer de Tx en el canal B están dañados con datos del canal A. El problema apareció desde el commit 4409df5866b7 (\"serial: sc16is7xx: change EFR lock to operate on each channels\"), que cambió el bloqueo de EFR para que funcione en cada canal en lugar de en todo el chip. Este commit ha introducido una regresión, porque el bloqueo de EFR se utiliza no solo para proteger el acceso a los registros de EFR, sino también, de una forma muy oscura y no documentada, para proteger el acceso al búfer de datos, que es compartido por los manejadores de Tx y Rx, pero también por cada canal del IC. Primero, solucione esta regresión cambiando a kfifo_out_linear_ptr() en sc16is7xx_handle_tx() para eliminar la necesidad de un búfer Rx/Tx compartido. En segundo lugar, reemplace el búfer Rx por chip con un búfer Rx separado para cada canal."}],"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}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-667"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.76","versionEndExcluding":"6.2","matchCriteriaId":"9FE19A5C-D7A4-4995-BEE0-2B2E5B46EAC6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.15","versionEndExcluding":"6.7","matchCriteriaId":"61253639-4FB4-4953-A092-ED155EAB1548"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7.3","versionEndExcluding":"6.8","matchCriteriaId":"20F5F360-294D-4182-AC38-2F032FA57B3C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.10.5","matchCriteriaId":"48E239A0-A959-4FAB-8475-D045FED3DDA5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*","matchCriteriaId":"8B3CE743-2126-47A3-8B7C-822B502CF119"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*","matchCriteriaId":"4DEB27E7-30AA-45CC-8934-B89263EF3551"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/09cfe05e9907f3276887a20e267cc40e202f4fdd","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/133f4c00b8b2bfcacead9b81e7e8edfceb4b06c4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}