CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-36915 – nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
https://notcve.org/view.php?id=CVE-2024-36915
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies syzbot reported unsafe calls to copy_from_sockptr() [1] Use copy_safe_from_sockptr() instead. [1] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr include/linux/sockptr.h:55 [inline] BUG: KASAN: slab-out-of-bounds in nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255 Read of size 4 at addr ffff88801caa1ec3 by task syz-executor459/5078 CPU: 0 PID: 5078 Comm: syz-executor459 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] copy_from_sockptr include/linux/sockptr.h:55 [inline] nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255 do_sock_setsockopt+0x3b1/0x720 net/socket.c:2311 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xfd/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f7fac07fd89 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff660eb788 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7fac07fd89 RDX: 0000000000000000 RSI: 0000000000000118 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000020000a80 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 En el kernel de Linux, se resolvió la siguiente vulnerabilidad: nfc: llcp: corrige nfc_llcp_setsockopt() copias inseguras syzbot informó llamadas inseguras a copy_from_sockptr() [1] Utilice copy_safe_from_sockptr() en su lugar. [1] ERROR: KASAN: losa fuera de los límites en copy_from_sockptr_offset include/linux/sockptr.h:49 [en línea] ERROR: KASAN: losa fuera de los límites en copy_from_sockptr include/linux/sockptr.h:55 [en línea] ERROR: KASAN: losa fuera de los límites en nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255 Lectura de tamaño 4 en la dirección ffff88801caa1ec3 por tarea syz-executor459/5078 CPU: 0 PID: 5078 Comm : syz-executor459 No contaminado 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 27/03/2024 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en línea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [en línea] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan /report.c:601 copy_from_sockptr_offset include/linux/sockptr.h:49 [en línea] copy_from_sockptr include/linux/sockptr.h:55 [en línea] nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255 do_sock_setsockopt+0x3b 1/ 0x720 net/socket.c:2311 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [en línea] __se_sys_setsockopt net/socket.c:2340 [en línea] xb5/0xd0 red/zócalo .c:2340 do_syscall_64+0xfd/0x240 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f7fac07fd89 Código: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 18 00 00 0 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff660eb788 EFLAGS: 000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7fac07fd89 RDX: 0000000000000000 RSI: 0000000000000118 RDI: 0000000000000004 RBP: 000000000 0000000 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000020000a80 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000 000000000 R14: 0000000000000000 R15: 0000000000000000 • https://git.kernel.org/stable/c/298609e7069ce74542a2253a39ccc9717f1d877a https://git.kernel.org/stable/c/0f106133203021533cb753e80d75896f4ad222f8 https://git.kernel.org/stable/c/29dc0ea979d433dd3c26abc8fa971550bdc05107 https://git.kernel.org/stable/c/7a87441c9651ba37842f4809224aca13a554a26f •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-36914 – drm/amd/display: Skip on writeback when it's not applicable
https://notcve.org/view.php?id=CVE-2024-36914
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Skip on writeback when it's not applicable [WHY] dynamic memory safety error detector (KASAN) catches and generates error messages "BUG: KASAN: slab-out-of-bounds" as writeback connector does not support certain features which are not initialized. [HOW] Skip them when connector type is DRM_MODE_CONNECTOR_WRITEBACK. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amd/display: omitir la reescritura cuando no sea aplicable [POR QUÉ] el detector de errores de seguridad de memoria dinámica (KASAN) detecta y genera mensajes de error "ERROR: KASAN: slab-out- of-bounds" como conector de reescritura no admite ciertas funciones que no están inicializadas. [CÓMO] Omítelos cuando el tipo de conector sea DRM_MODE_CONNECTOR_WRITEBACK. • https://git.kernel.org/stable/c/87de0a741ef6d93fcb99983138a0d89a546a043c https://git.kernel.org/stable/c/951a498fa993c5501994ec2df97c9297b02488c7 https://git.kernel.org/stable/c/e9baa7110e9f3756bd5a812af376c288d9be894d https://git.kernel.org/stable/c/ecedd99a9369fb5cde601ae9abd58bca2739f1ae •
CVSS: 8.1EPSS: 0%CPEs: 3EXPL: 0CVE-2024-36913 – Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails
https://notcve.org/view.php?id=CVE-2024-36913
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. VMBus code could free decrypted pages if set_memory_encrypted()/decrypted() fails. Leak the pages if this happens. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Controladores: hv: vmbus: páginas de fuga si falla set_memory_encrypted() En máquinas virtuales CoCo, es posible que el host que no es de confianza provoque que set_memory_encrypted() o set_memory_decrypted() falle de manera que se produzca un error se devuelve y la memoria resultante se comparte. Las personas que llaman deben tener cuidado al manejar estos errores para evitar devolver memoria descifrada (compartida) al asignador de páginas, lo que podría provocar problemas funcionales o de seguridad. • https://git.kernel.org/stable/c/6123a4e8e25bd40cf44db14694abac00e6b664e6 https://git.kernel.org/stable/c/e813a0fc2e597146e9cebea61ced9c796d4e308f https://git.kernel.org/stable/c/03f5a999adba062456c8c818a683beb1b498983a • CWE-1258: Exposure of Sensitive System Information Due to Uncleared Debug Information •
CVSS: 8.1EPSS: 0%CPEs: 4EXPL: 0CVE-2024-36912 – Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl
https://notcve.org/view.php?id=CVE-2024-36912
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. In order to make sure callers of vmbus_establish_gpadl() and vmbus_teardown_gpadl() don't return decrypted/shared pages to allocators, add a field in struct vmbus_gpadl to keep track of the decryption status of the buffers. This will allow the callers to know if they should free or leak the pages. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Controladores: hv: vmbus: Seguimiento del estado descifrado en vmbus_gpadl En máquinas virtuales CoCo, es posible que el host que no es de confianza provoque que set_memory_encrypted() o set_memory_decrypted() falle de manera que se devuelva un error y la memoria resultante se comparte. Las personas que llaman deben tener cuidado al manejar estos errores para evitar devolver memoria descifrada (compartida) al asignador de páginas, lo que podría provocar problemas funcionales o de seguridad. • https://git.kernel.org/stable/c/1999644d95194d4a58d3e80ad04ce19220a01a81 https://git.kernel.org/stable/c/8e62341f5c45b27519b7d193bcc32ada416ad9d8 https://git.kernel.org/stable/c/bfae56be077ba14311509e70706a13458f87ea99 https://git.kernel.org/stable/c/211f514ebf1ef5de37b1cf6df9d28a56cfd242ca • CWE-1258: Exposure of Sensitive System Information Due to Uncleared Debug Information •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-36911 – hv_netvsc: Don't free decrypted memory
https://notcve.org/view.php?id=CVE-2024-36911
In the Linux kernel, the following vulnerability has been resolved: hv_netvsc: Don't free decrypted memory In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. The netvsc driver could free decrypted/shared pages if set_memory_decrypted() fails. Check the decrypted field in the gpadl to decide whether to free the memory. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: hv_netvsc: no liberar memoria descifrada. En las máquinas virtuales CoCo, es posible que el host que no es de confianza provoque que set_memory_encrypted() o set_memory_decrypted() falle, de modo que se devuelva un error y el resultado La memoria es compartida. • https://git.kernel.org/stable/c/a56fe611326332bf6b7126e5559590c57dcebad4 https://git.kernel.org/stable/c/4aaed9dbe8acd2b6114458f0498a617283d6275b https://git.kernel.org/stable/c/bbf9ac34677b57506a13682b31a2a718934c0e31 •