Vulnerabilidad en kernel de Linux (CVE-2024-26695)
Gravedad CVSS v3.1:
MEDIA
Tipo:
CWE-476
Desreferencia a puntero nulo (NULL)
Fecha de publicación:
03/04/2024
Última modificación:
07/01/2025
Descripción
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: crypto: ccp - Corrige la desreferencia del puntero nulo en __sev_platform_shutdown_locked El dispositivo de la plataforma SEV se puede apagar con un psp_master nulo, por ejemplo, usando DEBUG_TEST_DRIVER_REMOVE. Encontrado usando KASAN: [ 137.148210] ccp 0000:23:00.1: dispositivo de habilitación (0000 -> 0002) [ 137.162647] ccp 0000:23:00.1: no hay colas de comandos disponibles [ 137.170598] ccp 0000:23:00.1: sev habilitado [ 13 7.174645 ] ccp 0000:23:00.1: psp habilitado [137.178890] falla de protección general, probablemente para dirección no canónica 0xdffffc000000001e: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN NOPTI [137.182693] KASAN: null-ptr-deref en rango [0x00 000000000000f0- 0x00000000000000f7] [ 137.182693] CPU: 93 PID: 1 Comm: swapper/0 No contaminado 6.8.0-rc1+ #311 [ 137.182693] RIP: 0010:__sev_platform_shutdown_locked+0x51/0x180 [ 137.1826 93] Código: 08 80 3c 08 00 0f 85 0e 01 00 00 48 8b 1d 67 b6 01 08 48 b8 00 00 00 00 00 fc ff df 48 8d bb f0 00 00 00 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 fe 00 00 00 48 8b 9b f0 00 00 00 48 85 db 74 2c [ 137.182693] RSP: 0018:ffffc900000cf9b0 EFLAGS: 00010216 [ 137.182693] RAX: dffffc0000000000 RBX: 00000000000000000 RC X: 000000000000001e [ 137.182693] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000000000f0 [ 137.182693] RBP: ffffc900000cf9c8 R0 8 : 0000000000000000 R09: ffffbfff58f5a66 [ 137.182693] R10: ffffc900000cf9c8 R11: ffffffffac7ad32f R12: ffff8881e5052c28 [ 137.182693] R13: ffff8881 e5052c28 R14: ffff8881758e43e8 R15: ffffffffac64abf8 [ 137.182693] FS: 0000000000000000(0000) GS:ffff889de7000000(0000) knlGS:00000000000000000 [ 137.182693] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 137.182693] CR2: 0000000000000000 CR3: 0000001cf7c7e000 CR4: 0000000000350ef0 [ 137.182693 ] Seguimiento de llamadas: [ 137.182693] [ 137.182693] ? show_regs+0x6c/0x80 [137.182693]? __die_body+0x24/0x70 [ 137.182693] ? die_addr+0x4b/0x80 [ 137.182693] ? exc_general_protection+0x126/0x230 [137.182693]? asm_exc_general_protection+0x2b/0x30 [137.182693]? __sev_platform_shutdown_locked+0x51/0x180 [ 137.182693] sev_firmware_shutdown.isra.0+0x1e/0x80 [ 137.182693] sev_dev_destroy+0x49/0x100 [ 137.182693] psp_dev_destroy+0x47/0 xb0 [ 137.182693] sp_destroy+0xbb/0x240 [ 137.182693] sp_pci_remove+0x45/0x60 [ 137.182693] pci_device_remove+0xaa/0x1d0 [ 137.182693] device_remove+0xc7/0x170 [ 137.182693]realmente_probe+0x374/0xbe0 [ 137.182693] ? srso_return_thunk+0x5/0x5f [ 137.182693] __driver_probe_device+0x199/0x460 [ 137.182693] driver_probe_device+0x4e/0xd0 [ 137.182693] __driver_attach+0x191/0x3d0 [ 137.18 2693] ? __pfx___driver_attach+0x10/0x10 [ 137.182693] bus_for_each_dev+0x100/0x190 [ 137.182693] ? __pfx_bus_for_each_dev+0x10/0x10 [137.182693]? __kasan_check_read+0x15/0x20 [ 137.182693] ? srso_return_thunk+0x5/0x5f [137.182693]? _raw_spin_unlock+0x27/0x50 [ 137.182693] driver_attach+0x41/0x60 [ 137.182693] bus_add_driver+0x2a8/0x580 [ 137.182693] driver_register+0x141/0x480 [ 137.182693] __pci_ registro_controlador+0x1d6/0x2a0 [137.182693]? srso_return_thunk+0x5/0x5f [137.182693]? esrt_sysfs_init+0x1cd/0x5d0 [137.182693]? __pfx_sp_mod_init+0x10/0x10 [ 137.182693] sp_pci_init+0x22/0x30 [ 137.182693] sp_mod_init+0x14/0x30 [ 137.182693] ? __pfx_sp_mod_init+0x10/0x10 [ 137.182693] do_one_initcall+0xd1/0x470 [ 137.182693] ? __pfx_do_one_initcall+0x10/0x10 [137.182693]? parameq+0x80/0xf0 [137.182693]? srso_return_thunk+0x5/0x5f [137.182693]? __kmalloc+0x3b0/0x4e0 [ 137.182693] ? kernel_init_freeable+0x92d/0x1050 [137.182693]? kasan_populate_vmalloc_pte+0x171/0x190 [137.182693]? srso_return_thunk+0x5/0x5f [137.182693] kernel_init_freeable+0xa64/0x1050 [137.182693]? __pfx_kernel_init+0x10/0x10 [ 137.182693] kernel_init+0x24/0x160 [ 137.182693] ? __switch_to_asm+0x3e/0x70 [ 137.182693] ret_from_fork+0x40/0x80 [ 137.182693] ? __pfx_kernel_init+0x1 ---truncado---
Impacto
Puntuación base 3.x
5.50
Gravedad 3.x
MEDIA
Productos y versiones vulnerables
CPE | Desde | Hasta |
---|---|---|
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.10.137 (incluyendo) | 5.10.210 (excluyendo) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.15.61 (incluyendo) | 5.15.149 (excluyendo) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.18.18 (incluyendo) | 5.19 (excluyendo) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.19.2 (incluyendo) | 5.20 (excluyendo) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.0 (incluyendo) | 6.1.79 (excluyendo) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.2 (incluyendo) | 6.6.18 (excluyendo) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.7 (incluyendo) | 6.7.6 (excluyendo) |
cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* | ||
cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* | ||
cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* | ||
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/58054faf3bd29cd0b949b77efcb6157f66f401ed
- https://git.kernel.org/stable/c/7535ec350a5f09b5756a7607f5582913f21200f4
- https://git.kernel.org/stable/c/8731fe001a60581794ed9cf65da8cd304846a6fb
- https://git.kernel.org/stable/c/88aa493f393d2ee38ac140e1f6ac1881346e85d4
- https://git.kernel.org/stable/c/b5909f197f3b26aebedca7d8ac7b688fd993a266
- https://git.kernel.org/stable/c/ccb88e9549e7cfd8bcd511c538f437e20026e983
- https://git.kernel.org/stable/c/58054faf3bd29cd0b949b77efcb6157f66f401ed
- https://git.kernel.org/stable/c/7535ec350a5f09b5756a7607f5582913f21200f4
- https://git.kernel.org/stable/c/8731fe001a60581794ed9cf65da8cd304846a6fb
- https://git.kernel.org/stable/c/88aa493f393d2ee38ac140e1f6ac1881346e85d4
- https://git.kernel.org/stable/c/b5909f197f3b26aebedca7d8ac7b688fd993a266
- https://git.kernel.org/stable/c/ccb88e9549e7cfd8bcd511c538f437e20026e983
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html