CVE-2022-49002

MEDIUM EPSS 16.0%
Published Oct 21, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 21, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() for the error path to avoid reference count leak.

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
16.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 14

VendorProductVersionRange
linuxlinux_kernel*≥3.15  –  <4.9.335
linuxlinux_kernel*≥4.10  –  <4.14.301
linuxlinux_kernel*≥4.15  –  <4.19.268
linuxlinux_kernel*≥4.20  –  <5.4.226
linuxlinux_kernel*≥5.5  –  <5.10.158
linuxlinux_kernel*≥5.11  –  <5.15.82
linuxlinux_kernel*≥5.16  –  <6.0.12
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/2a8f7b90681472948de172dbbf5a54cd342870aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4bedbbd782ebbe7287231fea862c158d4f08a9e3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/71c4a621985fc051ab86d3a86c749069a993fcb2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/876d7bfb89273997056220029ff12b1c2cc4691d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a5c65cd56aed027f8a97fda8b691caaeb66d115e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d47bc9d7bcdbb9adc9703513d964b514fee5b0bf
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2a8f7b90681472948de172dbbf5a54cd342870aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4bedbbd782ebbe7287231fea862c158d4f08a9e3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/71c4a621985fc051ab86d3a86c749069a993fcb2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/876d7bfb89273997056220029ff12b1c2cc4691d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a5c65cd56aed027f8a97fda8b691caaeb66d115e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d47bc9d7bcdbb9adc9703513d964b514fee5b0bf
    Patch