CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48714 – bpf: Use VM_MAP instead of VM_ALLOC for ringbuf
https://notcve.org/view.php?id=CVE-2022-48714
In the Linux kernel, the following vulnerability has been resolved: bpf: Use VM_MAP instead of VM_ALLOC for ringbuf After commit 2fd3fb0be1d1 ("kasan, vmalloc: unpoison VM_ALLOC pages after mapping"), non-VM_ALLOC mappings will be marked as accessible in __get_vm_area_node() when KASAN is enabled. But now the flag for ringbuf area is VM_ALLOC, so KASAN will complain out-of-bound access after vmap() returns. Because the ringbuf area is created by mapping allocated pages, so use VM_MAP instead. After the change, info in /proc/vmallocinfo also changes from [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmalloc user to [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmap user En el kernel de Linux, se resolvió la siguiente vulnerabilidad: bpf: use VM_MAP en lugar de VM_ALLOC para ringbuf Después del commit 2fd3fb0be1d1 ("kasan, vmalloc: despoisone las páginas VM_ALLOC después del mapeo"), los mapeos que no sean VM_ALLOC se marcarán como accesibles en __get_vm_area_node( ) cuando KASAN está habilitado. Pero ahora el indicador para el área ringbuf es VM_ALLOC, por lo que KASAN se quejará del acceso fuera de los límites después de que regrese vmap(). Debido a que el área ringbuf se crea asignando páginas asignadas, use VM_MAP en su lugar. • https://git.kernel.org/stable/c/457f44363a8894135c85b7a9afd2bd8196db24ab https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6 https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48713 – perf/x86/intel/pt: Fix crash with stop filters in single-range mode
https://notcve.org/view.php?id=CVE-2022-48713
In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/pt: Fix crash with stop filters in single-range mode Add a check for !buf->single before calling pt_buffer_region_size in a place where a missing check can cause a kernel crash. Fixes a bug introduced by commit 670638477aed ("perf/x86/intel/pt: Opportunistically use single range output mode"), which added a support for PT single-range output mode. Since that commit if a PT stop filter range is hit while tracing, the kernel will crash because of a null pointer dereference in pt_handle_status due to calling pt_buffer_region_size without a ToPA configured. The commit which introduced single-range mode guarded almost all uses of the ToPA buffer variables with checks of the buf->single variable, but missed the case where tracing was stopped by the PT hardware, which happens when execution hits a configured stop filter. Tested that hitting a stop filter while PT recording successfully records a trace with this patch but crashes without this patch. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/x86/intel/pt: soluciona el fallo con filtros de parada en modo de rango único. Añade una marca para ! • https://git.kernel.org/stable/c/670638477aede0d7a355ced04b569214aa3feacd https://git.kernel.org/stable/c/456f041e035913fcedb275aff6f8a71dfebcd394 https://git.kernel.org/stable/c/e83d941fd3445f660d2f43647c580a320cc384f6 https://git.kernel.org/stable/c/feffb6ae2c80b9a8206450cdef90f5943baced99 https://git.kernel.org/stable/c/1d9093457b243061a9bba23543c38726e864a643 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48712 – ext4: fix error handling in ext4_fc_record_modified_inode()
https://notcve.org/view.php?id=CVE-2022-48712
In the Linux kernel, the following vulnerability has been resolved: ext4: fix error handling in ext4_fc_record_modified_inode() Current code does not fully takes care of krealloc() error case, which could lead to silent memory corruption or a kernel bug. This patch fixes that. Also it cleans up some duplicated error handling logic from various functions in fast_commit.c file. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ext4: corrige el manejo de errores en ext4_fc_record_modified_inode() El código actual no soluciona completamente el caso de error de krealloc(), lo que podría provocar una corrupción silenciosa de la memoria o un error del kernel. Este parche soluciona eso. También limpia alguna lógica de manejo de errores duplicada de varias funciones en el archivo fast_commit.c. • https://git.kernel.org/stable/c/62e46e0ffc02daa8fcfc02f7a932cc8a19601b19 https://git.kernel.org/stable/c/1b6762ecdf3cf12113772427c904aa3c420a1802 https://git.kernel.org/stable/c/14aa3f49c7fc6424763f4323bfbc3a807b0727dc https://git.kernel.org/stable/c/cdce59a1549190b66f8e3fe465c2b2f714b98a94 •
CVSS: 5.3EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48711 – tipc: improve size validations for received domain records
https://notcve.org/view.php?id=CVE-2022-48711
In the Linux kernel, the following vulnerability has been resolved: tipc: improve size validations for received domain records The function tipc_mon_rcv() allows a node to receive and process domain_record structs from peer nodes to track their views of the network topology. This patch verifies that the number of members in a received domain record does not exceed the limit defined by MAX_MON_DOMAIN, something that may otherwise lead to a stack overflow. tipc_mon_rcv() is called from the function tipc_link_proto_rcv(), where we are reading a 32 bit message data length field into a uint16. To avert any risk of bit overflow, we add an extra sanity check for this in that function. We cannot see that happen with the current code, but future designers being unaware of this risk, may introduce it by allowing delivery of very large (> 64k) sk buffers from the bearer layer. This potential problem was identified by Eric Dumazet. This fixes CVE-2022-0435 En el kernel de Linux, se resolvió la siguiente vulnerabilidad: tipc: mejorar las validaciones de tamaño para los registros de dominio recibidos. La función tipc_mon_rcv() permite que un nodo reciba y procese estructuras domain_record de nodos pares para rastrear sus vistas de la topología de la red. • https://git.kernel.org/stable/c/35c55c9877f8de0ab129fa1a309271d0ecc868b9 https://git.kernel.org/stable/c/175db196e45d6f0e6047eccd09c8ba55465eb131 https://git.kernel.org/stable/c/fde4ddeadd099bf9fbb9ccbee8e1b5c20d530a2d https://git.kernel.org/stable/c/f1af11edd08dd8376f7a84487cbb0ea8203e3a1d https://git.kernel.org/stable/c/d692e3406e052dbf9f6d9da0cba36cb763272529 https://git.kernel.org/stable/c/3c7e5943553594f68bbc070683db6bb6f6e9e78e https://git.kernel.org/stable/c/1f1788616157b0222b0c2153828b475d95e374a7 https://git.kernel.org/stable/c/59ff7514f8c56f166aadca49bcecfa028 •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2021-47620 – Bluetooth: refactor malicious adv data check
https://notcve.org/view.php?id=CVE-2021-47620
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: Bluetooth: refactorización de verificación de datos publicitarios maliciosos. Se estaba realizando una verificación de lectura fuera de los límites al final del bucle while num_reports y llenaría el diario con falsos positivos. Se agregó una verificación al comienzo del procesamiento del bucle para que no se verifique después de que se haya avanzado ptr. • https://git.kernel.org/stable/c/305e92f525450f3e1b5f5c9dc7eadb152d66a082 https://git.kernel.org/stable/c/7889b38a7f21ed19314f83194622b195d328465c https://git.kernel.org/stable/c/5a539c08d743d9910631448da78af5e961664c0e https://git.kernel.org/stable/c/8819f93cd4a443dfe547aa622b21f723757df3fb https://git.kernel.org/stable/c/835d3706852537bf92eb23eb8635b8dee0c0aa67 https://git.kernel.org/stable/c/83d5196b65d1b29e27d7dd16a3b9b439fb1d2dba https://git.kernel.org/stable/c/bcea886771c3f22a590c8c8b9139a107bd7f1e1c https://git.kernel.org/stable/c/5c968affa804ba98c3c603f37ffea6fba •