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LinuxCVE-2022-48894

HistoryAug 21, 2024 - 7:15 a.m.

CVE-2022-48894

2024-08-2107:15:05

CWE-476

Linux

web.nvd.nist.gov

linux kernel

vulnerability

resolved

update

arm-smmu-v3

driver

cve-2022-48894

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

6.5

Confidence

Low

EPSS

Percentile

9.5%

JSON

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

iommu/arm-smmu-v3: Don’t unregister on shutdown

Similar to SMMUv2, this driver calls iommu_device_unregister() from the
shutdown path, which removes the IOMMU groups with no coordination
whatsoever with their users - shutdown methods are optional in device
drivers. This can lead to NULL pointer dereferences in those drivers’
DMA API calls, or worse.

Instead of calling the full arm_smmu_device_remove() from
arm_smmu_device_shutdown(), let’s pick only the relevant function call -
arm_smmu_device_disable() - more or less the reverse of
arm_smmu_device_reset() - and call just that from the shutdown path.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange6.1–6.1.7

linuxlinux_kernelMatch6.2rc1

linuxlinux_kernelMatch6.2rc2

linuxlinux_kernelMatch6.2rc3

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel6.2cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
linuxlinux_kernel6.2cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
linuxlinux_kernel6.2cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc1::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc2::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc3::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c"
    ],
    "versions": [
      {
        "version": "57365a04c921",
        "lessThan": "ead3e6c79479",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "57365a04c921",
        "lessThan": "32ea2c57dc21",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c"
    ],
    "versions": [
      {
        "version": "6.1",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.1",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.7",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]