CVE - CVE-2022-49098

CVE-ID
CVE-2022-49098	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2133c422a103cf7c7768c37b9ac382e73b691892 URL:https://git.kernel.org/stable/c/2133c422a103cf7c7768c37b9ac382e73b691892 MISC:https://git.kernel.org/stable/c/3d0078f8bddd58d9bb1ad40bbe929f8633abb276 URL:https://git.kernel.org/stable/c/3d0078f8bddd58d9bb1ad40bbe929f8633abb276 MISC:https://git.kernel.org/stable/c/5ea98d0f5f035c1bcf1517ccec0e024ae35a48b2 URL:https://git.kernel.org/stable/c/5ea98d0f5f035c1bcf1517ccec0e024ae35a48b2 MISC:https://git.kernel.org/stable/c/6b4c0149a56147b29169e07000d566162892722a URL:https://git.kernel.org/stable/c/6b4c0149a56147b29169e07000d566162892722a MISC:https://git.kernel.org/stable/c/792f232d57ff28bbd5f9c4abe0466b23d5879dc8 URL:https://git.kernel.org/stable/c/792f232d57ff28bbd5f9c4abe0466b23d5879dc8 MISC:https://git.kernel.org/stable/c/cf580d2e3884dbafd6b90269b03a24d661578624 URL:https://git.kernel.org/stable/c/cf580d2e3884dbafd6b90269b03a24d661578624 MISC:https://git.kernel.org/stable/c/dcd6b1a624c0ffa21034d8b1e02e9d068458f596 URL:https://git.kernel.org/stable/c/dcd6b1a624c0ffa21034d8b1e02e9d068458f596
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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