CVE-2024-35931

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amdgpu: Omitir el restablecimiento de la ranura de error PCI durante la recuperación de RAS Por qué: El restablecimiento de la ranura de error PCI puede activarse después de inyectar ue en UMC varias veces, lo que provocó que el sistema se bloqueara. [ 557.371857] amdgpu 0000:af:00.0: amdgpu: el reinicio de la GPU se realizó correctamente, intentando reanudar [ 557.373718] [drm] PCIE GART de 512M habilitado. [ 557.373722] [drm] PTB ubicado en 0x0000031FED700000 [ 557.373788] [drm] ¡La VRAM se pierde debido al reinicio de la GPU! [ 557.373789] [drm] PSP se está reanudando... [ 557.547012] mlx5_core 0000:55:00.0: mlx5_pci_err_detected Estado del dispositivo = 1 pci_status: 0. Salir, resultado = 3, es necesario restablecer [ 557.547067] [drm] Error de PCI: devolución de llamada detectada , estado(1)!! [ 557.547069] [drm] Aún no hay soporte para XGMI hive... [ 557.548125] mlx5_core 0000:55:00.0: mlx5_pci_slot_reset Estado del dispositivo = 1 pci_status: 0. Ingrese [ 557.607763] mlx5_core 0000:55:00.0: espere el valor del contador vital 0x16b5b después de 1 iteración [557.607777] mlx5_core 0000:55:00.0: mlx5_pci_slot_reset Estado del dispositivo = 1 pci_status: 1. Salir, err = 0, resultado = 5, recuperado [557.610492] [drm] Error de PCI: ¡devolución de llamada de restablecimiento de ranura! ... [ 560.689382] amdgpu 0000:3f:00.0: amdgpu: ¡El reinicio de GPU (2) se realizó correctamente! [ 560.689546] amdgpu 0000:5a:00.0: amdgpu: ¡El reinicio de GPU (2) se realizó correctamente! [ 560.689562] falla de protección general, probablemente para dirección no canónica 0x5f080b54534f611f: 0000 [#1] SMP NOPTI [ 560.701008] CPU: 16 PID: 2361 Comm: kworker/u448:9 Tainted: G OE 5.15.0-91-generic # 101-Ubuntu [ 560.712057] Nombre de hardware: Microsoft C278A/C278A, BIOS C2789.5.BS.1C11.AG.1 08/11/2023 [ 560.720959] Cola de trabajo: amdgpu-reset-hive amdgpu_ras_do_recovery [amdgpu] [ 87] QEPD: 0010: amdgpu_device_gpu_recover.cold+0xbf1/0xcf5 [amdgpu] [ 560.736891] Código: ff 41 89 c6 e9 1b ff ff ff 44 0f b6 45 b0 e9 4f ff ff ff be 01 00 00 00 4c 89 e7 e8 76 c9 8b ff 44 0f b6 45 b0 e9 3c fd ff ff <48> 83 ba 18 02 00 00 00 0f 84 6a f8 ff ff 48 8d 7a 78 be 01 00 00 [ 560.757967] RSP: 0018:ffa0000032e53d80 00010202 [560.763848] RAX: ffa00000001dfd10 RBX: ffa0000000197090 RCX: ffa0000032e53db0 [ 560.771856] RDX: 5f080b54534f5f07 RSI: 0000000000000000 RDI: ff11000128100010 [ 560.779867] BP: ffa0000032e53df0 R08: 0000000000000000 R09: ffffffffffe77f08 [ 560.787879] R10: 0000000000ffff0a R11: 0000000000000001 R12: 000 [560.795889] R13: ffa0000032e53e00 R14: 0000000000000000 R15: 0000000000000000 [ 560.803889] FS: 0000000000000000(0000) GS:ff11007e7e800000(0000) knlGS:0000000000000000 [ 560.812973] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 560.819422] CR2: 000055a04c118e68 CR3: 0000000007410005 CR4: 0000000000771ee0 [ 560.827433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 560.835433] DR3: 0000000000000000 DR6: 00000000ffe07f0 DR7: 0000000000000400 [ 560.843444] PKRU: 55555554 [ 560.846480] Seguimiento de llamadas: [ 560.849225] [ 560.851580] ? show_trace_log_lvl+0x1d6/0x2ea [560.856488]? show_trace_log_lvl+0x1d6/0x2ea [560.861379]? amdgpu_ras_do_recovery+0x1b2/0x210 [amdgpu] [ 560.867778] ? show_regs.part.0+0x23/0x29 [560.872293]? __die_body.cold+0x8/0xd [ 560.876502] ? die_addr+0x3e/0x60 [ 560.880238] ? exc_general_protection+0x1c5/0x410 [560.885532]? asm_exc_general_protection+0x27/0x30 [560.891025]? amdgpu_device_gpu_recover.cold+0xbf1/0xcf5 [amdgpu] [ 560.898323] amdgpu_ras_do_recovery+0x1b2/0x210 [amdgpu] [ 560.904520] Process_one_work+0x228/0x3d0 Cómo: En la recuperación de RAS, el restablecimiento del modo 1 se emite desde RAS fatal manejo de errores y esperaba todos los nodos en una colmena que se van a restablecer. no es necesario emitir otro modo-1 durante este procedimiento.

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Skip do PCI error slot reset during RAS recovery Why: The PCI error slot reset maybe triggered after inject ue to UMC multi times, this caused system hang. [ 557.371857] amdgpu 0000:af:00.0: amdgpu: GPU reset succeeded, trying to resume [ 557.373718] [drm] PCIE GART of 512M enabled. [ 557.373722] [drm] PTB located at 0x0000031FED700000 [ 557.373788] [drm] VRAM is lost due to GPU reset! [ 557.373789] [drm] PSP is resuming... [ 557.547012] mlx5_core 0000:55:00.0: mlx5_pci_err_detected Device state = 1 pci_status: 0. Exit, result = 3, need reset [ 557.547067] [drm] PCI error: detected callback, state(1)!! [ 557.547069] [drm] No support for XGMI hive yet... [ 557.548125] mlx5_core 0000:55:00.0: mlx5_pci_slot_reset Device state = 1 pci_status: 0. Enter [ 557.607763] mlx5_core 0000:55:00.0: wait vital counter value 0x16b5b after 1 iterations [ 557.607777] mlx5_core 0000:55:00.0: mlx5_pci_slot_reset Device state = 1 pci_status: 1. Exit, err = 0, result = 5, recovered [ 557.610492] [drm] PCI error: slot reset callback!! ... [ 560.689382] amdgpu 0000:3f:00.0: amdgpu: GPU reset(2) succeeded! [ 560.689546] amdgpu 0000:5a:00.0: amdgpu: GPU reset(2) succeeded! [ 560.689562] general protection fault, probably for non-canonical address 0x5f080b54534f611f: 0000 [#1] SMP NOPTI [ 560.701008] CPU: 16 PID: 2361 Comm: kworker/u448:9 Tainted: G OE 5.15.0-91-generic #101-Ubuntu [ 560.712057] Hardware name: Microsoft C278A/C278A, BIOS C2789.5.BS.1C11.AG.1 11/08/2023 [ 560.720959] Workqueue: amdgpu-reset-hive amdgpu_ras_do_recovery [amdgpu] [ 560.728887] RIP: 0010:amdgpu_device_gpu_recover.cold+0xbf1/0xcf5 [amdgpu] [ 560.736891] Code: ff 41 89 c6 e9 1b ff ff ff 44 0f b6 45 b0 e9 4f ff ff ff be 01 00 00 00 4c 89 e7 e8 76 c9 8b ff 44 0f b6 45 b0 e9 3c fd ff ff <48> 83 ba 18 02 00 00 00 0f 84 6a f8 ff ff 48 8d 7a 78 be 01 00 00 [ 560.757967] RSP: 0018:ffa0000032e53d80 EFLAGS: 00010202 [ 560.763848] RAX: ffa00000001dfd10 RBX: ffa0000000197090 RCX: ffa0000032e53db0 [ 560.771856] RDX: 5f080b54534f5f07 RSI: 0000000000000000 RDI: ff11000128100010 [ 560.779867] RBP: ffa0000032e53df0 R08: 0000000000000000 R09: ffffffffffe77f08 [ 560.787879] R10: 0000000000ffff0a R11: 0000000000000001 R12: 0000000000000000 [ 560.795889] R13: ffa0000032e53e00 R14: 0000000000000000 R15: 0000000000000000 [ 560.803889] FS: 0000000000000000(0000) GS:ff11007e7e800000(0000) knlGS:0000000000000000 [ 560.812973] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 560.819422] CR2: 000055a04c118e68 CR3: 0000000007410005 CR4: 0000000000771ee0 [ 560.827433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 560.835433] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 560.843444] PKRU: 55555554 [ 560.846480] Call Trace: [ 560.849225] <TASK> [ 560.851580] ? show_trace_log_lvl+0x1d6/0x2ea [ 560.856488] ? show_trace_log_lvl+0x1d6/0x2ea [ 560.861379] ? amdgpu_ras_do_recovery+0x1b2/0x210 [amdgpu] [ 560.867778] ? show_regs.part.0+0x23/0x29 [ 560.872293] ? __die_body.cold+0x8/0xd [ 560.876502] ? die_addr+0x3e/0x60 [ 560.880238] ? exc_general_protection+0x1c5/0x410 [ 560.885532] ? asm_exc_general_protection+0x27/0x30 [ 560.891025] ? amdgpu_device_gpu_recover.cold+0xbf1/0xcf5 [amdgpu] [ 560.898323] amdgpu_ras_do_recovery+0x1b2/0x210 [amdgpu] [ 560.904520] process_one_work+0x228/0x3d0 How: In RAS recovery, mode-1 reset is issued from RAS fatal error handling and expected all the nodes in a hive to be reset. no need to issue another mode-1 during this procedure.

It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when modifying certain settings values through debugfs. A privileged local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.