Описание
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Avoid potential ndlp use-after-free in dev_loss_tmo_callbk
Smatch detected a potential use-after-free of an ndlp oject in
dev_loss_tmo_callbk during driver unload or fatal error handling.
Fix by reordering code to avoid potential use-after-free if initial
nodelist reference has been previously removed.
A flaw was found in the Linux kernel's scsi: lpfc component. This vulnerability involves a use-after-free error in the dev_loss_tmo_callbk function. During driver unload or fatal error handling, a previously freed object could be accessed. This could allow a local attacker to cause a system crash, leading to a denial of service.
Отчет
This vulnerability is rated as Moderate impact because it requires local access on systems equipped with Emulex LightPulse Fibre Channel hardware running the lpfc driver, and it is triggered only during specific error handling or module unloading sequences. Most enterprise environments that do not utilize Fibre Channel storage infrastructure or this specific adapter type remain unaffected. For systems with active adapters, the issue may lead to a denial of service through a kernel crash if device loss timeouts coincide with driver cleanup routines.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Affected | ||
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | ||
| 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 | Affected | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Affected | ||
| Red Hat Enterprise Linux 10.0 Extended Update Support | kernel | Fixed | RHSA-2026:4111 | 09.03.2026 |
| Red Hat Enterprise Linux 9.6 Extended Update Support | kernel | Fixed | RHSA-2026:1194 | 26.01.2026 |
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Дополнительная информация
Статус:
EPSS
7 High
CVSS3
Связанные уязвимости
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Avoid potential ndlp use-after-free in dev_loss_tmo_callbk Smatch detected a potential use-after-free of an ndlp oject in dev_loss_tmo_callbk during driver unload or fatal error handling. Fix by reordering code to avoid potential use-after-free if initial nodelist reference has been previously removed.
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Avoid potential ndlp use-after-free in dev_loss_tmo_callbk Smatch detected a potential use-after-free of an ndlp oject in dev_loss_tmo_callbk during driver unload or fatal error handling. Fix by reordering code to avoid potential use-after-free if initial nodelist reference has been previously removed.
In the Linux kernel, the following vulnerability has been resolved: s ...
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Avoid potential ndlp use-after-free in dev_loss_tmo_callbk Smatch detected a potential use-after-free of an ndlp oject in dev_loss_tmo_callbk during driver unload or fatal error handling. Fix by reordering code to avoid potential use-after-free if initial nodelist reference has been previously removed.
Уязвимость функции dev_loss_tmo_callbk() модуля drivers/scsi/lpfc/lpfc_hbadisc.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7 High
CVSS3