CVE-2024-46676

2024-09-1306:15:12

Linux

web.nvd.nist.gov

linux kernel

nfc

protocol

vulnerability

fix

division by zero

netlink

interface

svace

AI Score

6.5

Confidence

Low

EPSS

Percentile

10.9%

JSON

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

nfc: pn533: Add poll mod list filling check

In case of im_protocols value is 1 and tm_protocols value is 0 this
combination successfully passes the check
‘if (!im_protocols && !tm_protocols)’ in the nfc_start_poll().
But then after pn533_poll_create_mod_list() call in pn533_start_poll()
poll mod list will remain empty and dev->poll_mod_count will remain 0
which lead to division by zero.

Normally no im protocol has value 1 in the mask, so this combination is
not expected by driver. But these protocol values actually come from
userspace via Netlink interface (NFC_CMD_START_POLL operation). So a
broken or malicious program may pass a message containing a “bad”
combination of protocol parameter values so that dev->poll_mod_count
is not incremented inside pn533_poll_create_mod_list(), thus leading
to division by zero.
Call trace looks like:
nfc_genl_start_poll()
nfc_start_poll()
->start_poll()
pn533_start_poll()

Add poll mod list filling check.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected configurations

Vulners

Node

linuxlinux_kernelRange3.12–5.4.283

linuxlinux_kernelRange5.5.0–5.10.225

linuxlinux_kernelRange5.11.0–5.15.166

linuxlinux_kernelRange5.16.0–6.1.108

linuxlinux_kernelRange6.2.0–6.6.49

linuxlinux_kernelRange6.7.0–6.10.8

linuxlinux_kernelRange6.11.0≥

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/nfc/pn533/pn533.c"
    ],
    "versions": [
      {
        "version": "dfccd0f58044",
        "lessThan": "c5e05237444f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dfccd0f58044",
        "lessThan": "8ddaea033de0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dfccd0f58044",
        "lessThan": "7535db0624a2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dfccd0f58044",
        "lessThan": "7ecd3dd4f8ee",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dfccd0f58044",
        "lessThan": "56ad559cf6d8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dfccd0f58044",
        "lessThan": "64513d0e546a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dfccd0f58044",
        "lessThan": "febccb39255f",
        "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/nfc/pn533/pn533.c"
    ],
    "versions": [
      {
        "version": "3.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.12",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.283",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.225",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.166",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.108",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.49",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.8",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]