CVE-2024-41035

2024-07-2915:15:12

Linux

web.nvd.nist.gov

linux kernel

usb core

vulnerability

clearing reserved bits

AI Score

6.5

Confidence

Low

EPSS

Percentile

13.5%

JSON

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

USB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor

Syzbot has identified a bug in usbcore (see the Closes: tag below)
caused by our assumption that the reserved bits in an endpoint
descriptor’s bEndpointAddress field will always be 0. As a result of
the bug, the endpoint_is_duplicate() routine in config.c (and possibly
other routines as well) may believe that two descriptors are for
distinct endpoints, even though they have the same direction and
endpoint number. This can lead to confusion, including the bug
identified by syzbot (two descriptors with matching endpoint numbers
and directions, where one was interrupt and the other was bulk).

To fix the bug, we will clear the reserved bits in bEndpointAddress
when we parse the descriptor. (Note that both the USB-2.0 and USB-3.1
specs say these bits are “Reserved, reset to zero”.) This requires us
to make a copy of the descriptor earlier in usb_parse_endpoint() and
use the copy instead of the original when checking for duplicates.

Affected configurations

Vulners

Node

linuxlinux_kernelRange4.10–4.19.318

linuxlinux_kernelRange4.20.0–5.4.280

linuxlinux_kernelRange5.5.0–5.10.222

linuxlinux_kernelRange5.11.0–5.15.163

linuxlinux_kernelRange5.16.0–6.1.100

linuxlinux_kernelRange6.2.0–6.6.41

linuxlinux_kernelRange6.7.0–6.9.10

linuxlinux_kernelRange6.10.0≥

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/usb/core/config.c"
    ],
    "versions": [
      {
        "version": "0a8fd1346254",
        "lessThan": "d8418fd083d1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a8fd1346254",
        "lessThan": "60abea505b72",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a8fd1346254",
        "lessThan": "d09dd21bb521",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a8fd1346254",
        "lessThan": "2bd8534a1b83",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a8fd1346254",
        "lessThan": "9edcf317620d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a8fd1346254",
        "lessThan": "647d61aef106",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a8fd1346254",
        "lessThan": "37514a5c1251",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a8fd1346254",
        "lessThan": "a368ecde8a50",
        "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/usb/core/config.c"
    ],
    "versions": [
      {
        "version": "4.10",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.10",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.318",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.280",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.222",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.163",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.100",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.41",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.10",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]