CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-50123 – bpf: Add the missing BPF_LINK_TYPE invocation for sockmap
https://notcve.org/view.php?id=CVE-2024-50123
In the Linux kernel, the following vulnerability has been resolved: bpf: Add the missing BPF_LINK_TYPE invocation for sockmap There is an out-of-bounds read in bpf_link_show_fdinfo() for the sockmap link fd. Fix it by adding the missing BPF_LINK_TYPE invocation for sockmap link Also add comments for bpf_link_type to prevent missing updates in the future. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Agregue la invocación BPF_LINK_TYPE faltante para sockmap Hay una lectura fuera de los límites en bpf_link_show_fdinfo() para el fd del enlace sockmap. Arréglelo agregando la invocación BPF_LINK_TYPE faltante para el enlace sockmap Agregue también comentarios para bpf_link_type para evitar actualizaciones faltantes en el futuro. • https://git.kernel.org/stable/c/699c23f02c65cbfc3e638f14ce0d70c23a2e1f02 https://git.kernel.org/stable/c/6d79f12c0ce2bc8ff5f109093df1734bd6450615 https://git.kernel.org/stable/c/c2f803052bc7a7feb2e03befccc8e49b6ff1f5f5 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-50122 – PCI: Hold rescan lock while adding devices during host probe
https://notcve.org/view.php?id=CVE-2024-50122
In the Linux kernel, the following vulnerability has been resolved: PCI: Hold rescan lock while adding devices during host probe Since adding the PCI power control code, we may end up with a race between the pwrctl platform device rescanning the bus and host controller probe functions. The latter need to take the rescan lock when adding devices or we may end up in an undefined state having two incompletely added devices and hit the following crash when trying to remove the device over sysfs: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Internal error: Oops: 0000000096000004 [#1] SMP Call trace: __pi_strlen+0x14/0x150 kernfs_find_ns+0x80/0x13c kernfs_remove_by_name_ns+0x54/0xf0 sysfs_remove_bin_file+0x24/0x34 pci_remove_resource_files+0x3c/0x84 pci_remove_sysfs_dev_files+0x28/0x38 pci_stop_bus_device+0x8c/0xd8 pci_stop_bus_device+0x40/0xd8 pci_stop_and_remove_bus_device_locked+0x28/0x48 remove_store+0x70/0xb0 dev_attr_store+0x20/0x38 sysfs_kf_write+0x58/0x78 kernfs_fop_write_iter+0xe8/0x184 vfs_write+0x2dc/0x308 ksys_write+0x7c/0xec En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI: Mantener el bloqueo de rescaneo mientras se agregan dispositivos durante la sonda del host. Desde que se agregó el código de control de energía PCI, podemos terminar con una ejecución entre el dispositivo de la plataforma pwrctl que vuelve a escanear el bus y las funciones de sonda del controlador del host. Estos últimos deben tomar el bloqueo de rescan al agregar dispositivos o podemos terminar en un estado indefinido con dos dispositivos agregados de forma incompleta y encontrar el siguiente bloqueo al intentar eliminar el dispositivo a través de sysfs: No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000000 Error interno: Oops: 0000000096000004 [#1] Rastreo de llamadas SMP: __pi_strlen+0x14/0x150 kernfs_find_ns+0x80/0x13c kernfs_remove_by_name_ns+0x54/0xf0 sysfs_remove_bin_file+0x24/0x34 pci_remove_resource_files+0x3c/0x84 pci_remove_sysfs_dev_files+0x28/0x38 pci_stop_bus_device+0x8c/0xd8 pci_stop_bus_device+0x40/0xd8 pci_stop_and_remove_bus_device_locked+0x28/0x48 remove_store+0x70/0xb0 dev_attr_store+0x20/0x38 sysfs_kf_write+0x58/0x78 kernfs_fop_write_iter+0xe8/0x184 vfs_write+0x2dc/0x308 ksys_write+0x7c/0xec • https://git.kernel.org/stable/c/4565d2652a37e438e4cd729e2a8dfeffe34c958c https://git.kernel.org/stable/c/d4f38a0e7cc94615f63cf7765ca117e5cc2773ae https://git.kernel.org/stable/c/1d59d474e1cb7d4fdf87dfaf96f44647f13ea590 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-50121 – nfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_net
https://notcve.org/view.php?id=CVE-2024-50121
In the Linux kernel, the following vulnerability has been resolved: nfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_net In the normal case, when we excute `echo 0 > /proc/fs/nfsd/threads`, the function `nfs4_state_destroy_net` in `nfs4_state_shutdown_net` will release all resources related to the hashed `nfs4_client`. If the `nfsd_client_shrinker` is running concurrently, the `expire_client` function will first unhash this client and then destroy it. This can lead to the following warning. Additionally, numerous use-after-free errors may occur as well. nfsd_client_shrinker echo 0 > /proc/fs/nfsd/threads expire_client nfsd_shutdown_net unhash_client ... nfs4_state_shutdown_net /* won't wait shrinker exit */ /* cancel_work(&nn->nfsd_shrinker_work) * nfsd_file for this /* won't destroy unhashed client1 */ * client1 still alive nfs4_state_destroy_net */ nfsd_file_cache_shutdown /* trigger warning */ kmem_cache_destroy(nfsd_file_slab) kmem_cache_destroy(nfsd_file_mark_slab) /* release nfsd_file and mark */ __destroy_client ==================================================================== BUG nfsd_file (Not tainted): Objects remaining in nfsd_file on __kmem_cache_shutdown() -------------------------------------------------------------------- CPU: 4 UID: 0 PID: 764 Comm: sh Not tainted 6.12.0-rc3+ #1 dump_stack_lvl+0x53/0x70 slab_err+0xb0/0xf0 __kmem_cache_shutdown+0x15c/0x310 kmem_cache_destroy+0x66/0x160 nfsd_file_cache_shutdown+0xac/0x210 [nfsd] nfsd_destroy_serv+0x251/0x2a0 [nfsd] nfsd_svc+0x125/0x1e0 [nfsd] write_threads+0x16a/0x2a0 [nfsd] nfsctl_transaction_write+0x74/0xa0 [nfsd] vfs_write+0x1a5/0x6d0 ksys_write+0xc1/0x160 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e ==================================================================== BUG nfsd_file_mark (Tainted: G B W ): Objects remaining nfsd_file_mark on __kmem_cache_shutdown() -------------------------------------------------------------------- dump_stack_lvl+0x53/0x70 slab_err+0xb0/0xf0 __kmem_cache_shutdown+0x15c/0x310 kmem_cache_destroy+0x66/0x160 nfsd_file_cache_shutdown+0xc8/0x210 [nfsd] nfsd_destroy_serv+0x251/0x2a0 [nfsd] nfsd_svc+0x125/0x1e0 [nfsd] write_threads+0x16a/0x2a0 [nfsd] nfsctl_transaction_write+0x74/0xa0 [nfsd] vfs_write+0x1a5/0x6d0 ksys_write+0xc1/0x160 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e To resolve this issue, cancel `nfsd_shrinker_work` using synchronous mode in nfs4_state_shutdown_net. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfsd: cancelar nfsd_shrinker_work usando el modo de sincronización en nfs4_state_shutdown_net. • https://git.kernel.org/stable/c/7c24fa225081f31bc6da6a355c1ba801889ab29a https://git.kernel.org/stable/c/2bbf10861d51dae76c6da7113516d0071c782653 https://git.kernel.org/stable/c/958294a3eb82026fcfff20b0287a90e9c854785e https://git.kernel.org/stable/c/f3ea5ec83d1a827f074b2b660749817e0bf2b23e https://git.kernel.org/stable/c/f965dc0f099a54fca100acf6909abe52d0c85328 https://git.kernel.org/stable/c/add1df5eba163a3a6ece11cb85890e2e410baaea https://git.kernel.org/stable/c/d5ff2fb2e7167e9483846e34148e60c0c016a1f6 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-50120 – smb: client: Handle kstrdup failures for passwords
https://notcve.org/view.php?id=CVE-2024-50120
In the Linux kernel, the following vulnerability has been resolved: smb: client: Handle kstrdup failures for passwords In smb3_reconfigure(), after duplicating ctx->password and ctx->password2 with kstrdup(), we need to check for allocation failures. If ses->password allocation fails, return -ENOMEM. If ses->password2 allocation fails, free ses->password, set it to NULL, and return -ENOMEM. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: Manejar errores de kstrdup para contraseñas. En smb3_reconfigure(), después de duplicar ctx->password y ctx->password2 con kstrdup(), debemos verificar si hay errores de asignación. Si la asignación de ses->password falla, devuelva -ENOMEM. Si la asignación de ses->password2 falla, libere ses->password, configúrelo en NULL y devuelva -ENOMEM. • https://git.kernel.org/stable/c/7e8cffa4f85e6839335d75e6b47f918d90c1d194 https://git.kernel.org/stable/c/c1eb537bf4560b3ad4df606c266c665624f3b502 https://git.kernel.org/stable/c/e78308a6dcab1e53b38b8dd952e69c515cd324d7 https://git.kernel.org/stable/c/2a0fc63f1f4fccfeb367d0c57b8a243cec60c26c https://git.kernel.org/stable/c/35dbac8c328d6afe937cd45ecd41d209d0b9f8b8 https://git.kernel.org/stable/c/35488799b0ab6e4327f82e1d9209a60805665b37 https://git.kernel.org/stable/c/9a5dd61151399ad5a5d69aad28ab164734c1e3bc •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-50119 – cifs: fix warning when destroy 'cifs_io_request_pool'
https://notcve.org/view.php?id=CVE-2024-50119
In the Linux kernel, the following vulnerability has been resolved: cifs: fix warning when destroy 'cifs_io_request_pool' There's a issue as follows: WARNING: CPU: 1 PID: 27826 at mm/slub.c:4698 free_large_kmalloc+0xac/0xe0 RIP: 0010:free_large_kmalloc+0xac/0xe0 Call Trace: <TASK> ? __warn+0xea/0x330 mempool_destroy+0x13f/0x1d0 init_cifs+0xa50/0xff0 [cifs] do_one_initcall+0xdc/0x550 do_init_module+0x22d/0x6b0 load_module+0x4e96/0x5ff0 init_module_from_file+0xcd/0x130 idempotent_init_module+0x330/0x620 __x64_sys_finit_module+0xb3/0x110 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Obviously, 'cifs_io_request_pool' is not created by mempool_create(). So just use mempool_exit() to revert 'cifs_io_request_pool'. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: se corrige la advertencia al destruir 'cifs_io_request_pool' Hay un problema como el siguiente: ADVERTENCIA: CPU: 1 PID: 27826 en mm/slub.c:4698 free_large_kmalloc+0xac/0xe0 RIP: 0010:free_large_kmalloc+0xac/0xe0 Rastreo de llamadas: ? Obviamente, 'cifs_io_request_pool' no es creado por mempool_create(). Entonces simplemente use mempool_exit() para revertir 'cifs_io_request_pool'. • https://git.kernel.org/stable/c/edea94a69730b74a8867bbafe742c3fc4e580722 https://git.kernel.org/stable/c/726416a253c51037636ecc65ad3dada3d02dcaea https://git.kernel.org/stable/c/2ce1007f42b8a6a0814386cb056feb28dc6d6091 •