CVSS: 7.0EPSS: 0%CPEs: 10EXPL: 0CVE-2024-36883 – net: fix out-of-bounds access in ops_init
https://notcve.org/view.php?id=CVE-2024-36883
In the Linux kernel, the following vulnerability has been resolved: net: fix out-of-bounds access in ops_init net_alloc_generic is called by net_alloc, which is called without any locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It is read twice, first to allocate an array, then to set s.len, which is later used to limit the bounds of the array access. It is possible that the array is allocated and another thread is registering a new pernet ops, increments max_gen_ptrs, which is then used to set s.len with a larger than allocated length for the variable array. Fix it by reading max_gen_ptrs only once in net_alloc_generic. If max_gen_ptrs is later incremented, it will be caught in net_assign_generic. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: corrige el acceso fuera de los límites en ops_init net_alloc_generic es llamado por net_alloc, que se llama sin ningún bloqueo. • https://git.kernel.org/stable/c/073862ba5d249c20bd5c49fc6d904ff0e1f6a672 https://git.kernel.org/stable/c/561331eae0a03d0c4cf60f3cf485aa3e8aa5ab48 https://git.kernel.org/stable/c/a2c82f7bee1ffa9eafa1fb0bd886a7eea8c9e497 https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3 https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7 https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030 https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25e • CWE-787: Out-of-bounds Write •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-36882 – mm: use memalloc_nofs_save() in page_cache_ra_order()
https://notcve.org/view.php?id=CVE-2024-36882
In the Linux kernel, the following vulnerability has been resolved: mm: use memalloc_nofs_save() in page_cache_ra_order() See commit f2c817bed58d ("mm: use memalloc_nofs_save in readahead path"), ensure that page_cache_ra_order() do not attempt to reclaim file-backed pages too, or it leads to a deadlock, found issue when test ext4 large folio. INFO: task DataXceiver for:7494 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:DataXceiver for state:D stack:0 pid:7494 ppid:1 flags:0x00000200 Call trace: __switch_to+0x14c/0x240 __schedule+0x82c/0xdd0 schedule+0x58/0xf0 io_schedule+0x24/0xa0 __folio_lock+0x130/0x300 migrate_pages_batch+0x378/0x918 migrate_pages+0x350/0x700 compact_zone+0x63c/0xb38 compact_zone_order+0xc0/0x118 try_to_compact_pages+0xb0/0x280 __alloc_pages_direct_compact+0x98/0x248 __alloc_pages+0x510/0x1110 alloc_pages+0x9c/0x130 folio_alloc+0x20/0x78 filemap_alloc_folio+0x8c/0x1b0 page_cache_ra_order+0x174/0x308 ondemand_readahead+0x1c8/0x2b8 page_cache_async_ra+0x68/0xb8 filemap_readahead.isra.0+0x64/0xa8 filemap_get_pages+0x3fc/0x5b0 filemap_splice_read+0xf4/0x280 ext4_file_splice_read+0x2c/0x48 [ext4] vfs_splice_read.part.0+0xa8/0x118 splice_direct_to_actor+0xbc/0x288 do_splice_direct+0x9c/0x108 do_sendfile+0x328/0x468 __arm64_sys_sendfile64+0x8c/0x148 invoke_syscall+0x4c/0x118 el0_svc_common.constprop.0+0xc8/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x4c/0x1f8 el0t_64_sync_handler+0xc0/0xc8 el0t_64_sync+0x188/0x190 En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: use memalloc_nofs_save() en page_cache_ra_order() Consulte el commit f2c817bed58d ("mm: use memalloc_nofs_save en la ruta de lectura anticipada"), asegúrese de que page_cache_ra_order() no intente recuperar archivos respaldados páginas también, o conduce a un punto muerto, se encontró un problema al probar el folio grande ext4. INFORMACIÓN: tarea DataXceiver para:7494 bloqueada durante más de 120 segundos. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" desactiva este mensaje. tarea:DataXceiver para estado:D pila:0 pid:7494 ppid:1 banderas:0x00000200 Rastreo de llamadas: __switch_to+0x14c/0x240 __schedule+0x82c/0xdd0 Schedule+0x58/0xf0 io_schedule+0x24/0xa0 __folio_lock+0x130/0x300 _lote+0x378 /0x918 migrar_páginas+0x350/0x700 compact_zone+0x63c/0xb38 compact_zone_order+0xc0/0x118 try_to_compact_pages+0xb0/0x280 __alloc_pages_direct_compact+0x98/0x248 __alloc_pages+0x510/0x1110 alloc_pages+0 x9c/0x130 folio_alloc+0x20/0x78 filemap_alloc_folio+0x8c/0x1b0 page_cache_ra_order+0x174 /0x308 ondemand_readahead+0x1c8/0x2b8 page_cache_async_ra+0x68/0xb8 filemap_readahead.isra.0+0x64/0xa8 filemap_get_pages+0x3fc/0x5b0 filemap_splice_read+0xf4/0x280 ext4_file_splice_read+0x2c/0x48 [ext4] vfs_splice_read.part.0+0xa8/0x118 empalme_direct_to_actor+ 0xbc/0x288 do_splice_direct+0x9c/0x108 do_sendfile+0x328/0x468 __arm64_sys_sendfile64+0x8c/0x148 invoke_syscall+0x4c/0x118 el0_svc_common.constprop.0+0xc8/0xf0 +0x24/0x38 el0_svc+0x4c/0x1f8 el0t_64_sync_handler+0xc0/0xc8 el0t_64_sync+0x188 /0x190 • https://git.kernel.org/stable/c/793917d997df2e432f3e9ac126e4482d68256d01 https://git.kernel.org/stable/c/7629ef6dda1564098aadeef38e5fbd11ee8627c4 https://git.kernel.org/stable/c/468971c3f4b8187f25334503b68050a0e1370147 https://git.kernel.org/stable/c/cf6a1d16c6df3c30b03f0c6a92a2ba7f86dffb45 https://git.kernel.org/stable/c/30153e4466647a17eebfced13eede5cbe4290e69 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-36881 – mm/userfaultfd: reset ptes when close() for wr-protected ones
https://notcve.org/view.php?id=CVE-2024-36881
In the Linux kernel, the following vulnerability has been resolved: mm/userfaultfd: reset ptes when close() for wr-protected ones Userfaultfd unregister includes a step to remove wr-protect bits from all the relevant pgtable entries, but that only covered an explicit UFFDIO_UNREGISTER ioctl, not a close() on the userfaultfd itself. Cover that too. This fixes a WARN trace. The only user visible side effect is the user can observe leftover wr-protect bits even if the user close()ed on an userfaultfd when releasing the last reference of it. However hopefully that should be harmless, and nothing bad should happen even if so. This change is now more important after the recent page-table-check patch we merged in mm-unstable (446dd9ad37d0 ("mm/page_table_check: support userfault wr-protect entries")), as we'll do sanity check on uffd-wp bits without vma context. So it's better if we can 100% guarantee no uffd-wp bit leftovers, to make sure each report will be valid. • https://git.kernel.org/stable/c/f369b07c861435bd812a9d14493f71b34132ed6f https://git.kernel.org/stable/c/3e2747c3ddfa717697c3cc2aa6ab989e48d6587d https://git.kernel.org/stable/c/377f3a9a3d032a52325a5b110379a25dd1ab1931 https://git.kernel.org/stable/c/8d8b68a5b0c9fb23d37df06bb273ead38fd5a29d https://git.kernel.org/stable/c/c88033efe9a391e72ba6b5df4b01d6e628f4e734 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-36880 – Bluetooth: qca: add missing firmware sanity checks
https://notcve.org/view.php?id=CVE-2024-36880
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: qca: add missing firmware sanity checks Add the missing sanity checks when parsing the firmware files before downloading them to avoid accessing and corrupting memory beyond the vmalloced buffer. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: Bluetooth: qca: agregar comprobaciones de integridad del firmware faltantes Agregue las comprobaciones de integridad del firmware faltantes al analizar los archivos de firmware antes de descargarlos para evitar acceder y dañar la memoria más allá del búfer vmalloced. • https://git.kernel.org/stable/c/83e81961ff7ef75f97756f316caea5aa6bcc19cc https://git.kernel.org/stable/c/ed53949cc92e28aaa3463d246942bda1fbb7f307 https://git.kernel.org/stable/c/1caceadfb50432dbf6d808796cb6c34ebb6d662c https://git.kernel.org/stable/c/427281f9498ed614f9aabc80e46ec077c487da6d https://git.kernel.org/stable/c/02f05ed44b71152d5e11d29be28aed91c0489b4e https://git.kernel.org/stable/c/2e4edfa1e2bd821a317e7d006517dcf2f3fac68d •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-36033 – Bluetooth: qca: fix info leak when fetching board id
https://notcve.org/view.php?id=CVE-2024-36033
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: qca: fix info leak when fetching board id Add the missing sanity check when fetching the board id to avoid leaking slab data when later requesting the firmware. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: Bluetooth: qca: corrige la fuga de información al obtener la identificación de la placa. Agregue la verificación de cordura que falta al recuperar la identificación de la placa para evitar fugas de datos de losa cuando luego solicite el firmware. • https://git.kernel.org/stable/c/a7f8dedb4be2cc930a29af24427b885405ecd15d https://git.kernel.org/stable/c/f30c37cb4549baf8377434892d520fe7769bdba7 https://git.kernel.org/stable/c/0adcf6be1445ed50bfd4a451a7a782568f270197 https://git.kernel.org/stable/c/a3dff121a7f5104c4c2d47edaa2351837ef645dd https://git.kernel.org/stable/c/bcccdc947d2ca5972b1e92d0dea10803ddc08ceb https://git.kernel.org/stable/c/ba307abed5e09759845c735ba036f8c12f55b209 •