CVE-2024-50090

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/xe/oa: Corregir desbordamiento en el búfer por lotes de oa. De manera predeterminada, xe_bb_create_job() agrega un MI_BATCH_BUFFER_END al buffer por lotes, esto no es un problema si el buffer por lotes solo se usa una vez, pero oa reutiliza el búfer por lotes para la misma métrica y en cada llamada agrega un MI_BATCH_BUFFER_END, imprimiendo la advertencia a continuación y luego desbordándose. [ 381.072016] ------------[ cortar aquí ]------------ [ 381.072019] xe 0000:00:02.0: [drm] ¡La afirmación `bb->len * 4 + bb_prefetch(q->gt) <= size` falló! Plataforma: LUNARLAKE Subplataforma: 1 Gráficos: Xe2_LPG / Xe2_HPG 20.04 Paso B0 Medios: Xe2_LPM / Xe2_HPM 20.00 Paso B0 Mosaico: 0 VRAM 0 B GT: 0 Tipo 1 Aquí se verifica si el buffer de lote ya tiene MI_BATCH_BUFFER_END si no, se agrega. v2: - simplemente se arregla, sugerencia de Ashutosh (seleccionada del commit 9ba0e0f30ca42a98af3689460063edfb6315718a)

In the Linux kernel, the following vulnerability has been resolved: drm/xe/oa: Fix overflow in oa batch buffer By default xe_bb_create_job() appends a MI_BATCH_BUFFER_END to batch buffer, this is not a problem if batch buffer is only used once but oa reuses the batch buffer for the same metric and at each call it appends a MI_BATCH_BUFFER_END, printing the warning below and then overflowing. [ 381.072016] ------------[ cut here ]------------ [ 381.072019] xe 0000:00:02.0: [drm] Assertion `bb->len * 4 + bb_prefetch(q->gt) <= size` failed! platform: LUNARLAKE subplatform: 1 graphics: Xe2_LPG / Xe2_HPG 20.04 step B0 media: Xe2_LPM / Xe2_HPM 20.00 step B0 tile: 0 VRAM 0 B GT: 0 type 1 So here checking if batch buffer already have MI_BATCH_BUFFER_END if not append it. v2: - simply fix, suggestion from Ashutosh (cherry picked from commit 9ba0e0f30ca42a98af3689460063edfb6315718a)

Michael Randrianantenaina discovered that the Bluetooth driver in the Linux Kernel contained an improper access control vulnerability. A nearby attacker could use this to connect a rogue device and possibly execute arbitrary code. Attila Szász discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted, could cause a denial of service or possibly execute arbitrary code.