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LinuxCVE-2024-44971

HistorySep 04, 2024 - 7:15 p.m.

CVE-2024-44971

2024-09-0419:15:31

CWE-401

Linux

web.nvd.nist.gov

linux kernel

vulnerability

memory leak

bcm_sf2_mdio_register

phy_device_free

net

dsa

cve-2024-44971

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

7.1

Confidence

High

EPSS

Percentile

5.1%

JSON

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

net: dsa: bcm_sf2: Fix a possible memory leak in bcm_sf2_mdio_register()

bcm_sf2_mdio_register() calls of_phy_find_device() and then
phy_device_remove() in a loop to remove existing PHY devices.
of_phy_find_device() eventually calls bus_find_device(), which calls
get_device() on the returned struct device * to increment the refcount.
The current implementation does not decrement the refcount, which causes
memory leak.

This commit adds the missing phy_device_free() call to decrement the
refcount via put_device() to balance the refcount.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange5.10–5.10.224

linuxlinux_kernelRange5.11–5.15.165

linuxlinux_kernelRange5.16–6.1.105

linuxlinux_kernelRange6.2–6.6.46

linuxlinux_kernelRange6.7–6.10.5

linuxlinux_kernelMatch6.11rc1

linuxlinux_kernelMatch6.11rc2

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel6.11cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
linuxlinux_kernel6.11cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.11	cpe:2.3:o:linux:linux_kernel:6.11:rc1::::::
linux	linux_kernel	6.11	cpe:2.3:o:linux:linux_kernel:6.11:rc2::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/dsa/bcm_sf2.c"
    ],
    "versions": [
      {
        "version": "771089c2a485",
        "lessThan": "b7b8d9f5e679",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "771089c2a485",
        "lessThan": "c05516c07290",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "771089c2a485",
        "lessThan": "7feef10768ea",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "771089c2a485",
        "lessThan": "a7d2808d6757",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "771089c2a485",
        "lessThan": "f3d5efe18a11",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "771089c2a485",
        "lessThan": "e3862093ee93",
        "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/net/dsa/bcm_sf2.c"
    ],
    "versions": [
      {
        "version": "5.10",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.10",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.224",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.165",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.105",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.46",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.5",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]