Описание
In the Linux kernel, the following vulnerability has been resolved:
scsi: ufs: core: Fix possible NULL pointer dereference in ufshcd_add_command_trace()
The kernel log indicates a crash in ufshcd_add_command_trace, due to a NULL
pointer dereference when accessing hwq->id. This can happen if
ufshcd_mcq_req_to_hwq() returns NULL.
This patch adds a NULL check for hwq before accessing its id field to
prevent a kernel crash.
Kernel log excerpt:
[] notify_die+0x4c/0x8c
[] __die+0x60/0xb0
[] die+0x4c/0xe0
[] die_kernel_fault+0x74/0x88
[] __do_kernel_fault+0x314/0x318
[] do_page_fault+0xa4/0x5f8
[] do_translation_fault+0x34/0x54
[] do_mem_abort+0x50/0xa8
[] el1_abort+0x3c/0x64
[] el1h_64_sync_handler+0x44/0xcc
[] el1h_64_sync+0x80/0x88
[] ufshcd_add_command_trace+0x23c/0x320
[] ufshcd_compl_one_cqe+0xa4/0x404
[] ufshcd_mcq_poll_cqe_lock+0xac/0x104
[] ufs_mtk_mcq_intr+0x54/0x74 [ufs_mediatek_mod]
[] __handle_irq_event_percpu+0xc8/0x348
[] handle_irq_event+0x3c/0xa8
[] handle_fasteoi_irq+0xf8/0x294
[] generic_handle_domain_irq+0x54/0x80
[] gic_handle_irq+0x1d4/0x330
[] call_on_irq_stack+0x44/0x68
[] do_interrupt_handler+0x78/0xd8
[] el1_interrupt+0x48/0xa8
[] el1h_64_irq_handler+0x14/0x24
[] el1h_64_irq+0x80/0x88
[] arch_local_irq_enable+0x4/0x1c
[] cpuidle_enter+0x34/0x54
[] do_idle+0x1dc/0x2f8
[] cpu_startup_entry+0x30/0x3c
[] secondary_start_kernel+0x134/0x1ac
[] __secondary_switched+0xc4/0xcc
A flaw was found in the Linux kernel's SCSI Universal Flash Storage (UFS) core. This flaw occurs due to a missing null pointer check in the ufshcd_add_command_trace() function. A local attacker could potentially trigger a scenario where a null value is returned by ufshcd_mcq_req_to_hwq(), leading to a null pointer dereference and a kernel crash. This can result in a Denial of Service (DoS) condition, making the system unavailable.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Fix deferred | ||
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected |
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Дополнительная информация
Статус:
5.5 Medium
CVSS3
Связанные уязвимости
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix possible NULL pointer dereference in ufshcd_add_command_trace() The kernel log indicates a crash in ufshcd_add_command_trace, due to a NULL pointer dereference when accessing hwq->id. This can happen if ufshcd_mcq_req_to_hwq() returns NULL. This patch adds a NULL check for hwq before accessing its id field to prevent a kernel crash. Kernel log excerpt: [<ffffffd5d192dc4c>] notify_die+0x4c/0x8c [<ffffffd5d1814e58>] __die+0x60/0xb0 [<ffffffd5d1814d64>] die+0x4c/0xe0 [<ffffffd5d181575c>] die_kernel_fault+0x74/0x88 [<ffffffd5d1864db4>] __do_kernel_fault+0x314/0x318 [<ffffffd5d2a3cdf8>] do_page_fault+0xa4/0x5f8 [<ffffffd5d2a3cd34>] do_translation_fault+0x34/0x54 [<ffffffd5d1864524>] do_mem_abort+0x50/0xa8 [<ffffffd5d2a297dc>] el1_abort+0x3c/0x64 [<ffffffd5d2a29718>] el1h_64_sync_handler+0x44/0xcc [<ffffffd5d181133c>] el1h_64_sync+0x80/0x88 [<ffffffd5d255c1dc>] ufshcd_add_command_trace+0x23c/0x320 [<...
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix possible NULL pointer dereference in ufshcd_add_command_trace() The kernel log indicates a crash in ufshcd_add_command_trace, due to a NULL pointer dereference when accessing hwq->id. This can happen if ufshcd_mcq_req_to_hwq() returns NULL. This patch adds a NULL check for hwq before accessing its id field to prevent a kernel crash. Kernel log excerpt: [<ffffffd5d192dc4c>] notify_die+0x4c/0x8c [<ffffffd5d1814e58>] __die+0x60/0xb0 [<ffffffd5d1814d64>] die+0x4c/0xe0 [<ffffffd5d181575c>] die_kernel_fault+0x74/0x88 [<ffffffd5d1864db4>] __do_kernel_fault+0x314/0x318 [<ffffffd5d2a3cdf8>] do_page_fault+0xa4/0x5f8 [<ffffffd5d2a3cd34>] do_translation_fault+0x34/0x54 [<ffffffd5d1864524>] do_mem_abort+0x50/0xa8 [<ffffffd5d2a297dc>] el1_abort+0x3c/0x64 [<ffffffd5d2a29718>] el1h_64_sync_handler+0x44/0xcc [<ffffffd5d181133c>] el1h_64_sync+0x80/0x88 [<ffffffd5d255c1dc>] ufshcd_add_command_trace+0x23c/0x320 [
In the Linux kernel, the following vulnerability has been resolved: s ...
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix possible NULL pointer dereference in ufshcd_add_command_trace() The kernel log indicates a crash in ufshcd_add_command_trace, due to a NULL pointer dereference when accessing hwq->id. This can happen if ufshcd_mcq_req_to_hwq() returns NULL. This patch adds a NULL check for hwq before accessing its id field to prevent a kernel crash. Kernel log excerpt: [<ffffffd5d192dc4c>] notify_die+0x4c/0x8c [<ffffffd5d1814e58>] __die+0x60/0xb0 [<ffffffd5d1814d64>] die+0x4c/0xe0 [<ffffffd5d181575c>] die_kernel_fault+0x74/0x88 [<ffffffd5d1864db4>] __do_kernel_fault+0x314/0x318 [<ffffffd5d2a3cdf8>] do_page_fault+0xa4/0x5f8 [<ffffffd5d2a3cd34>] do_translation_fault+0x34/0x54 [<ffffffd5d1864524>] do_mem_abort+0x50/0xa8 [<ffffffd5d2a297dc>] el1_abort+0x3c/0x64 [<ffffffd5d2a29718>] el1h_64_sync_handler+0x44/0xcc [<ffffffd5d181133c>] el1h_64_sync+0x80/0x88 [<ffffffd5d255c1dc>] ufshcd_add_command_trace+0x23c/0x32...
Уязвимость функции ufshcd_add_command_trace() модуля drivers/ufs/core/ufshcd.c поддержки хост-контроллеров UFS (Universal Flash Storage) ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании
5.5 Medium
CVSS3