Informazioni sul CVE-2022-49098
Drivers: hv: vmbus: Fix potential crash on module unload
CWE ID: N/A
Base Score (CVSS): N/A
CVE: CVE-2022-49098
Descrizione: In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Fix potential crash on module unload The vmbus driver relies on the panic notifier infrastructure to perform some operations when a panic event is detected. Since vmbus can be built as module, it is required that the driver handles both registering and unregistering such panic notifier callback. After commit 74347a99e73a (“x86/Hyper-V: Unload vmbus channel in hv panic callback”) though, the panic notifier registration is done unconditionally in the module initialization routine whereas the unregistering procedure is conditionally guarded and executes only if HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE capability is set. This patch fixes that by unconditionally unregistering the panic notifier in the module’s exit routine as well.
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Riferimenti esterni
- https://git.kernel.org/stable/c/6b4c0149a56147b29169e07000d566162892722a
- https://git.kernel.org/stable/c/2133c422a103cf7c7768c37b9ac382e73b691892
- https://git.kernel.org/stable/c/cf580d2e3884dbafd6b90269b03a24d661578624
- https://git.kernel.org/stable/c/dcd6b1a624c0ffa21034d8b1e02e9d068458f596
- https://git.kernel.org/stable/c/5ea98d0f5f035c1bcf1517ccec0e024ae35a48b2
- https://git.kernel.org/stable/c/3d0078f8bddd58d9bb1ad40bbe929f8633abb276
- https://git.kernel.org/stable/c/792f232d57ff28bbd5f9c4abe0466b23d5879dc8
Prodotti interessati
- Linux – Linux
- Linux – Linux
Relazioni con altri prodotti
Produttore:Linux
Prodotto: Linux
Anno: 2022
CWE:
CVSS: 0.0