CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-42256 – cifs: Fix server re-repick on subrequest retry
https://notcve.org/view.php?id=CVE-2024-42256
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix server re-repick on subrequest retry When a subrequest is marked for needing retry, netfs will call cifs_prepare_write() which will make cifs repick the server for the op before renegotiating credits; it then calls cifs_issue_write() which invokes smb2_async_writev() - which re-repicks the server. If a different server is then selected, this causes the increment of server->in_flight to happen against one record and the decrement to happen against another, leading to misaccounting. Fix this by just removing the repick code in smb2_async_writev(). As this is only called from netfslib-driven code, cifs_prepare_write() should always have been called first, and so server should never be NULL and the preparatory step is repeated in the event that we do a retry. The problem manifests as a warning looking something like: WARNING: CPU: 4 PID: 72896 at fs/smb/client/smb2ops.c:97 smb2_add_credits+0x3f0/0x9e0 [cifs] ... RIP: 0010:smb2_add_credits+0x3f0/0x9e0 [cifs] ... smb2_writev_callback+0x334/0x560 [cifs] cifs_demultiplex_thread+0x77a/0x11b0 [cifs] kthread+0x187/0x1d0 ret_from_fork+0x34/0x60 ret_from_fork_asm+0x1a/0x30 Which may be triggered by a number of different xfstests running against an Azure server in multichannel mode. generic/249 seems the most repeatable, but generic/215, generic/249 and generic/308 may also show it. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: corrige la repetición del servidor en el reintento de subrequest Cuando se marca una subrequest para necesitar un reintento, netfs llamará a cifs_prepare_write(), lo que hará que cifs vuelva a seleccionar el servidor para la operación antes de renegociar los créditos; luego llama a cifs_issue_write(), que invoca a smb2_async_writev(), que vuelve a seleccionar el servidor. Si luego se selecciona un servidor diferente, esto hace que el incremento de server->in_flight ocurra en un registro y la disminución en otro, lo que lleva a una contabilidad errónea. • https://git.kernel.org/stable/c/3ee1a1fc39819906f04d6c62c180e760cd3a689d https://git.kernel.org/stable/c/b1d0a566769b6fb3795b5289fc1daf9e0638d97a https://git.kernel.org/stable/c/de40579b903883274fe203865f29d66b168b7236 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-42255 – tpm: Use auth only after NULL check in tpm_buf_check_hmac_response()
https://notcve.org/view.php?id=CVE-2024-42255
In the Linux kernel, the following vulnerability has been resolved: tpm: Use auth only after NULL check in tpm_buf_check_hmac_response() Dereference auth after NULL check in tpm_buf_check_hmac_response(). Otherwise, unless tpm2_sessions_init() was called, a call can cause NULL dereference, when TCG_TPM2_HMAC is enabled. [jarkko: adjusted the commit message.] En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tpm: use autenticación solo después de la verificación NULL en tpm_buf_check_hmac_response() Desreferenciar la autenticación después de la verificación NULL en tpm_buf_check_hmac_response(). De lo contrario, a menos que se haya llamado a tpm2_sessions_init(), una llamada puede causar una desreferencia NULL, cuando TCG_TPM2_HMAC está habilitado. [jarkko: ajustó el mensaje de confirmación.] • https://git.kernel.org/stable/c/7ca110f2679b7d1f3ac1afc90e6ffbf0af3edf0d https://git.kernel.org/stable/c/b9afbb9a0c734197c59c43610071041044bf1562 https://git.kernel.org/stable/c/7dc357d343f134bf59815ff6098b93503ec8a23b •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-42254 – io_uring: fix error pbuf checking
https://notcve.org/view.php?id=CVE-2024-42254
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix error pbuf checking Syz reports a problem, which boils down to NULL vs IS_ERR inconsistent error handling in io_alloc_pbuf_ring(). KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:__io_remove_buffers+0xac/0x700 io_uring/kbuf.c:341 Call Trace: <TASK> io_put_bl io_uring/kbuf.c:378 [inline] io_destroy_buffers+0x14e/0x490 io_uring/kbuf.c:392 io_ring_ctx_free+0xa00/0x1070 io_uring/io_uring.c:2613 io_ring_exit_work+0x80f/0x8a0 io_uring/io_uring.c:2844 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 En el kernel de Linux, se resolvió la siguiente vulnerabilidad: io_uring: corrige el error pbuf comprobando Syz informa un problema, que se reduce a un manejo inconsistente de errores NULL vs IS_ERR en io_alloc_pbuf_ring(). KASAN: null-ptr-deref en el rango [0x0000000000000000-0x0000000000000007] RIP: 0010:__io_remove_buffers+0xac/0x700 io_uring/kbuf.c:341 Seguimiento de llamadas: io_put_bl io_uring/kbuf.c:378 línea] io_destroy_buffers+0x14e /0x490 io_uring/kbuf.c:392 io_ring_ctx_free+0xa00/0x1070 io_uring/io_uring.c:2613 io_ring_exit_work+0x80f/0x8a0 io_uring/io_uring.c:2844 Process_one_work kernel/workqueue.c:3231 [en línea] Núcleo 0xa2c/0x1830 /workqueue.c:3312 trabajador_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/ 0x30 arco/x86/entrada/entry_64.S:244 • https://git.kernel.org/stable/c/87585b05757dc70545efb434669708d276125559 https://git.kernel.org/stable/c/68d19af95a353f5e2b021602180b65b303eba99d https://git.kernel.org/stable/c/bcc87d978b834c298bbdd9c52454c5d0a946e97e •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-41022 – drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()
https://notcve.org/view.php?id=CVE-2024-41022
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq() The "instance" variable needs to be signed for the error handling to work. • https://git.kernel.org/stable/c/5594971e02764aa1c8210ffb838cb4e7897716e8 https://git.kernel.org/stable/c/8112fa72b7f139052843ff484130d6f97e9f052f https://git.kernel.org/stable/c/ea906e9ac61e3152bef63597f2d9f4a812fc346a https://git.kernel.org/stable/c/011552f29f20842c9a7a21bffe1f6a2d6457ba46 https://git.kernel.org/stable/c/5b0a3dc3e87821acb80e841b464d335aff242691 https://git.kernel.org/stable/c/0964c84b93db7fbf74f357c1e20957850e092db3 https://git.kernel.org/stable/c/8b2faf1a4f3b6c748c0da36cda865a226534d520 https://git.kernel.org/stable/c/3dd9734878a9042f0358301d19a2b006a •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-41021 – s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception()
https://notcve.org/view.php?id=CVE-2024-41021
In the Linux kernel, the following vulnerability has been resolved: s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception() There is no support for HWPOISON, MEMORY_FAILURE, or ARCH_HAS_COPY_MC on s390. Therefore we do not expect to see VM_FAULT_HWPOISON in do_exception(). However, since commit af19487f00f3 ("mm: make PTE_MARKER_SWAPIN_ERROR more general"), it is possible to see VM_FAULT_HWPOISON in combination with PTE_MARKER_POISONED, even on architectures that do not support HWPOISON otherwise. In this case, we will end up on the BUG() in do_exception(). Fix this by treating VM_FAULT_HWPOISON the same as VM_FAULT_SIGBUS, similar to x86 when MEMORY_FAILURE is not configured. Also print unexpected fault flags, for easier debugging. Note that VM_FAULT_HWPOISON_LARGE is not expected, because s390 cannot support swap entries on other levels than PTE level. • https://git.kernel.org/stable/c/af19487f00f34ff8643921d7909dbb3fedc7e329 https://git.kernel.org/stable/c/73a9260b7366d2906ec011e100319359fe2277d0 https://git.kernel.org/stable/c/9e13767ccefdc4f8aa92514b592b60f6b54882ff https://git.kernel.org/stable/c/a3aefb871222a9880602d1a44a558177b4143e3b https://git.kernel.org/stable/c/df39038cd89525d465c2c8827eb64116873f141a •