CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 0CVE-2023-52454 – nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length
https://notcve.org/view.php?id=CVE-2023-52454
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length If the host sends an H2CData command with an invalid DATAL, the kernel may crash in nvmet_tcp_build_pdu_iovec(). Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp] Call trace: process_one_work+0x174/0x3c8 worker_thread+0x2d0/0x3e8 kthread+0x104/0x110 Fix the bug by raising a fatal error if DATAL isn't coherent with the packet size. Also, the PDU length should never exceed the MAXH2CDATA parameter which has been communicated to the host in nvmet_tcp_handle_icreq(). En el kernel de Linux, se resolvió la siguiente vulnerabilidad: nvmet-tcp: soluciona un pánico del kernel cuando el host envía una longitud de PDU H2C no válida. Si el host envía un comando H2CData con un DATAL no válido, el kernel puede fallar en nvmet_tcp_build_pdu_iovec(). No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000000 lr: nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp] Rastreo de llamadas: Process_one_work+0x174/0x3c8 trabajador_thread+0x2d0/0x3e8 kthread+0x104/0x110 Solucione el error generando un error fatal si DATAL es No es coherente con el tamaño del paquete. Además, la longitud de la PDU nunca debe exceder el parámetro MAXH2CDATA que se ha comunicado al host en nvmet_tcp_handle_icreq(). • https://git.kernel.org/stable/c/872d26a391da92ed8f0c0f5cb5fef428067b7f30 https://git.kernel.org/stable/c/ee5e7632e981673f42a50ade25e71e612e543d9d https://git.kernel.org/stable/c/f775f2621c2ac5cc3a0b3a64665dad4fb146e510 https://git.kernel.org/stable/c/4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d https://git.kernel.org/stable/c/2871aa407007f6f531fae181ad252486e022df42 https://git.kernel.org/stable/c/24e05760186dc070d3db190ca61efdbce23afc88 https://git.kernel.org/stable/c/70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68 https://git.kernel.org/stable/c/efa56305908ba20de2104f1b8508c6a74 • CWE-476: NULL Pointer Dereference •
CVSS: 7.1EPSS: 0%CPEs: 7EXPL: 0CVE-2024-26593 – i2c: i801: Fix block process call transactions
https://notcve.org/view.php?id=CVE-2024-26593
In the Linux kernel, the following vulnerability has been resolved: i2c: i801: Fix block process call transactions According to the Intel datasheets, software must reset the block buffer index twice for block process call transactions: once before writing the outgoing data to the buffer, and once again before reading the incoming data from the buffer. The driver is currently missing the second reset, causing the wrong portion of the block buffer to be read. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i2c: i801: Reparar transacciones de llamada de proceso de bloque Según las hojas de datos de Intel, el software debe restablecer el índice del búfer de bloque dos veces para transacciones de llamada de proceso de bloque: una vez antes de escribir los datos salientes en el búfer , y una vez más antes de leer los datos entrantes del búfer. Actualmente, al controlador le falta el segundo reinicio, lo que provoca que se lea la parte incorrecta del búfer de bloque. • https://git.kernel.org/stable/c/315cd67c945351f8a569500f8ab16b7fa94026e8 https://git.kernel.org/stable/c/d074d5ff5ae77b18300e5079c6bda6342a4d44b7 https://git.kernel.org/stable/c/7a14b8a477b88607d157c24aeb23e7389ec3319f https://git.kernel.org/stable/c/1f8d0691c50581ba6043f009ec9e8b9f78f09d5a https://git.kernel.org/stable/c/491528935c9c48bf341d8b40eabc6c4fc5df6f2c https://git.kernel.org/stable/c/6be99c51829b24c914cef5bff6164877178e84d9 https://git.kernel.org/stable/c/609c7c1cc976e740d0fed4dbeec688b3ecb5dce2 https://git.kernel.org/stable/c/c1c9d0f6f7f1dbf29db996bd8e1662428 • CWE-125: Out-of-bounds Read •
CVSS: 9.3EPSS: 0%CPEs: 5EXPL: 0CVE-2024-26594 – ksmbd: validate mech token in session setup
https://notcve.org/view.php?id=CVE-2024-26594
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate mech token in session setup If client send invalid mech token in session setup request, ksmbd validate and make the error if it is invalid. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ksmbd: validar el token mecánico en la configuración de la sesión Si el cliente envía un token mecánico no válido en la solicitud de configuración de la sesión, ksmbd valida y genera el error si no es válido. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable. The specific flaw exists within the handling of SMB2 Mech Tokens. • https://git.kernel.org/stable/c/dd1de9268745f0eac83a430db7afc32cbd62e84b https://git.kernel.org/stable/c/6eb8015492bcc84e40646390e50a862b2c0529c9 https://git.kernel.org/stable/c/a2b21ef1ea4cf632d19b3a7cc4d4245b8e63202a https://git.kernel.org/stable/c/5e6dfec95833edc54c48605a98365a7325e5541e https://git.kernel.org/stable/c/92e470163d96df8db6c4fa0f484e4a229edb903d • CWE-125: Out-of-bounds Read •
CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0CVE-2023-52452 – bpf: Fix accesses to uninit stack slots
https://notcve.org/view.php?id=CVE-2023-52452
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix accesses to uninit stack slots Privileged programs are supposed to be able to read uninitialized stack memory (ever since 6715df8d5) but, before this patch, these accesses were permitted inconsistently. In particular, accesses were permitted above state->allocated_stack, but not below it. In other words, if the stack was already "large enough", the access was permitted, but otherwise the access was rejected instead of being allowed to "grow the stack". This undesired rejection was happening in two places: - in check_stack_slot_within_bounds() - in check_stack_range_initialized() This patch arranges for these accesses to be permitted. A bunch of tests that were relying on the old rejection had to change; all of them were changed to add also run unprivileged, in which case the old behavior persists. • https://git.kernel.org/stable/c/01f810ace9ed37255f27608a0864abebccf0aab3 https://git.kernel.org/stable/c/f3c4b01689d392373301e6e60d1b02c5b4020afc https://git.kernel.org/stable/c/d1b725ea5d104caea250427899f4e2e3ab15b4fc https://git.kernel.org/stable/c/0954982db8283016bf38e9db2da5adf47a102e19 https://git.kernel.org/stable/c/fbcf372c8eda2290470268e0afb5ab5d5f5d5fde https://git.kernel.org/stable/c/6b4a64bafd107e521c01eec3453ce94a3fb38529 • CWE-665: Improper Initialization •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2023-52451 – powerpc/pseries/memhp: Fix access beyond end of drmem array
https://notcve.org/view.php?id=CVE-2023-52451
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/memhp: Fix access beyond end of drmem array dlpar_memory_remove_by_index() may access beyond the bounds of the drmem lmb array when the LMB lookup fails to match an entry with the given DRC index. When the search fails, the cursor is left pointing to &drmem_info->lmbs[drmem_info->n_lmbs], which is one element past the last valid entry in the array. The debug message at the end of the function then dereferences this pointer: pr_debug("Failed to hot-remove memory at %llx\n", lmb->base_addr); This was found by inspection and confirmed with KASAN: pseries-hotplug-mem: Attempting to hot-remove LMB, drc index 1234 ================================================================== BUG: KASAN: slab-out-of-bounds in dlpar_memory+0x298/0x1658 Read of size 8 at addr c000000364e97fd0 by task bash/949 dump_stack_lvl+0xa4/0xfc (unreliable) print_report+0x214/0x63c kasan_report+0x140/0x2e0 __asan_load8+0xa8/0xe0 dlpar_memory+0x298/0x1658 handle_dlpar_errorlog+0x130/0x1d0 dlpar_store+0x18c/0x3e0 kobj_attr_store+0x68/0xa0 sysfs_kf_write+0xc4/0x110 kernfs_fop_write_iter+0x26c/0x390 vfs_write+0x2d4/0x4e0 ksys_write+0xac/0x1a0 system_call_exception+0x268/0x530 system_call_vectored_common+0x15c/0x2ec Allocated by task 1: kasan_save_stack+0x48/0x80 kasan_set_track+0x34/0x50 kasan_save_alloc_info+0x34/0x50 __kasan_kmalloc+0xd0/0x120 __kmalloc+0x8c/0x320 kmalloc_array.constprop.0+0x48/0x5c drmem_init+0x2a0/0x41c do_one_initcall+0xe0/0x5c0 kernel_init_freeable+0x4ec/0x5a0 kernel_init+0x30/0x1e0 ret_from_kernel_user_thread+0x14/0x1c The buggy address belongs to the object at c000000364e80000 which belongs to the cache kmalloc-128k of size 131072 The buggy address is located 0 bytes to the right of allocated 98256-byte region [c000000364e80000, c000000364e97fd0) ================================================================== pseries-hotplug-mem: Failed to hot-remove memory at 0 Log failed lookups with a separate message and dereference the cursor only when it points to a valid entry. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: powerpc/pseries/memhp: corrige el acceso más allá del final de la matriz drmem dlpar_memory_remove_by_index() puede acceder más allá de los límites de la matriz lmb drmem cuando la búsqueda de LMB no coincide con una entrada con el valor dado Índice de la República Democrática del Congo. Cuando la búsqueda falla, el cursor queda apuntando a &drmem_info->lmbs[drmem_info->n_lmbs], que es un elemento después de la última entrada válida en la matriz. • https://git.kernel.org/stable/c/51925fb3c5c901aa06cdc853268a6e19e19bcdc7 https://git.kernel.org/stable/c/bb79613a9a704469ddb8d6c6029d532a5cea384c https://git.kernel.org/stable/c/9b5f03500bc5b083c0df696d7dd169d7ef3dd0c7 https://git.kernel.org/stable/c/b582aa1f66411d4adcc1aa55b8c575683fb4687e https://git.kernel.org/stable/c/999a27b3ce9a69d54ccd5db000ec3a447bc43e6d https://git.kernel.org/stable/c/026fd977dc50ff4a5e09bfb0603557f104d3f3a0 https://git.kernel.org/stable/c/df16afba2378d985359812c865a15c05c70a967e https://git.kernel.org/stable/c/708a4b59baad96c4718dc0bd3a3427d3a • CWE-125: Out-of-bounds Read CWE-129: Improper Validation of Array Index •