CVE-2022-49098

MEDIUM EPSS 14.2%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
14.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 15

VendorProductVersionRange
linuxlinux_kernel*≥4.19.118  –  <4.19.238
linuxlinux_kernel*≥5.4.35  –  <5.4.189
linuxlinux_kernel*≥5.6.7  –  <5.7
linuxlinux_kernel*≥5.7.1  –  <5.10.111
linuxlinux_kernel*≥5.11  –  <5.15.34
linuxlinux_kernel*≥5.16  –  <5.16.20
linuxlinux_kernel*≥5.17  –  <5.17.3
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.18any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/2133c422a103cf7c7768c37b9ac382e73b691892
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3d0078f8bddd58d9bb1ad40bbe929f8633abb276
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ea98d0f5f035c1bcf1517ccec0e024ae35a48b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b4c0149a56147b29169e07000d566162892722a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/792f232d57ff28bbd5f9c4abe0466b23d5879dc8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf580d2e3884dbafd6b90269b03a24d661578624
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dcd6b1a624c0ffa21034d8b1e02e9d068458f596
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2133c422a103cf7c7768c37b9ac382e73b691892
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3d0078f8bddd58d9bb1ad40bbe929f8633abb276
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ea98d0f5f035c1bcf1517ccec0e024ae35a48b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b4c0149a56147b29169e07000d566162892722a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/792f232d57ff28bbd5f9c4abe0466b23d5879dc8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf580d2e3884dbafd6b90269b03a24d661578624
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dcd6b1a624c0ffa21034d8b1e02e9d068458f596
    Patch