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LinuxCVE-2024-40977

HistoryJul 12, 2024 - 1:15 p.m.

CVE-2024-40977

2024-07-1213:15:19

CWE-667

Linux

web.nvd.nist.gov

linux kernel

wifi

mt76

mt7921s

vulnerability

fix

chip recovery

deadlock

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

6.6

Confidence

High

EPSS

Percentile

5.1%

JSON

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

wifi: mt76: mt7921s: fix potential hung tasks during chip recovery

During chip recovery (e.g. chip reset), there is a possible situation that
kernel worker reset_work is holding the lock and waiting for kernel thread
stat_worker to be parked, while stat_worker is waiting for the release of
the same lock.
It causes a deadlock resulting in the dumping of hung tasks messages and
possible rebooting of the device.

This patch prevents the execution of stat_worker during the chip recovery.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange<6.1.96

linuxlinux_kernelRange6.2–6.6.36

linuxlinux_kernelRange6.7–6.9.7

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/wireless/mediatek/mt76/mt7921/mac.c",
      "drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c",
      "drivers/net/wireless/mediatek/mt76/mt7921/sdio_mac.c",
      "drivers/net/wireless/mediatek/mt76/sdio.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "0b81faa05b0b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "85edd783f453",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "e974dd4c22a2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "ecf0b2b8a37c",
        "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/wireless/mediatek/mt76/mt7921/mac.c",
      "drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c",
      "drivers/net/wireless/mediatek/mt76/mt7921/sdio_mac.c",
      "drivers/net/wireless/mediatek/mt76/sdio.c"
    ],
    "versions": [
      {
        "version": "6.1.96",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.36",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.7",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]