CVE-2024-38568 drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group

2024-06-1913:35:34

Linux

www.cve.org

linux kernel

perf tool

driver vulnerability

array index check

memory write overflow

event group

out-of-bounds violation

event group size

fixed

cve-2024-38568

0.0004 Low

EPSS

Percentile

15.7%

JSON

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

drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group

The perf tool allows users to create event groups through following
cmd [1], but the driver does not check whether the array index is out
of bounds when writing data to the event_group array. If the number of
events in an event_group is greater than HNS3_PMU_MAX_HW_EVENTS, the
memory write overflow of event_group array occurs.

Add array index check to fix the possible array out of bounds violation,
and return directly when write new events are written to array bounds.

There are 9 different events in an event_group.
[1] perf stat -e '{pmu/event1/, … ,pmu/event9/}

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/perf/hisilicon/hns3_pmu.c"
    ],
    "versions": [
      {
        "version": "66637ab137b4",
        "lessThan": "3669baf30830",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "66637ab137b4",
        "lessThan": "be1fa711e59c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "66637ab137b4",
        "lessThan": "b5120d322763",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "66637ab137b4",
        "lessThan": "aa2d3d678895",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "66637ab137b4",
        "lessThan": "81bdd60a3d1d",
        "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/perf/hisilicon/hns3_pmu.c"
    ],
    "versions": [
      {
        "version": "6.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.0",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.93",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.33",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.12",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.3",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]