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NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-64k-debug-devel-matched  (opens in a new tab)

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EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-RHEL9-KERNEL64KDEBUGDEVELMATCHED-13174183
  • published1 Oct 2025
  • disclosed17 Sept 2025
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Introduced: 17 Sep 2025

CVE-2022-50374  (opens in a new tab)
CWE-476  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-debug-devel-matched package and not the kernel-64k-debug-devel-matched package as distributed by RHEL.

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure

syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1], for rcu_sync_enter() is called without rcu_sync_init() due to hci_uart_tty_open() ignoring percpu_init_rwsem() failure.

While we are at it, fix that hci_uart_register_device() ignores percpu_init_rwsem() failure and hci_uart_unregister_device() does not call percpu_free_rwsem().