CVE-2021-47006

2024-02-2809:15:38

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

402

cve

2021

47006

linux kernel

arm

vulnerability

resolved

6.3 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.0%

JSON

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

ARM: 9064/1: hw_breakpoint: Do not directly check the event’s overflow_handler hook

The commit 1879445dfa7b (“perf/core: Set event’s default
::overflow_handler()”) set a default event->overflow_handler in
perf_event_alloc(), and replace the check event->overflow_handler with
is_default_overflow_handler(), but one is missing.

Currently, the bp->overflow_handler can not be NULL. As a result,
enable_single_step() is always not invoked.

Comments from Zhen Lei:

https://patchwork.kernel.org/project/linux-arm-kernel/patch/[email protected]/

Affected configurations

Vulners

Node

linuxlinux_kernelRange4.7–4.9.269

linuxlinux_kernelRange4.10.0–4.14.233

linuxlinux_kernelRange4.15.0–4.19.191

linuxlinux_kernelRange4.20.0–5.4.120

linuxlinux_kernelRange5.5.0–5.10.38

linuxlinux_kernelRange5.11.0–5.11.22

linuxlinux_kernelRange5.12.0–5.12.5

linuxlinux_kernelRange5.13.0≥

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

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
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": [
      "arch/arm/kernel/hw_breakpoint.c"
    ],
    "versions": [
      {
        "version": "1879445dfa7b",
        "lessThan": "555a70f7fff0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1879445dfa7b",
        "lessThan": "ed1f67465327",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1879445dfa7b",
        "lessThan": "a9938d6d78a2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1879445dfa7b",
        "lessThan": "3ed8832aeaa9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1879445dfa7b",
        "lessThan": "630146203108",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1879445dfa7b",
        "lessThan": "7eeacc6728c5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1879445dfa7b",
        "lessThan": "dabe299425b1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1879445dfa7b",
        "lessThan": "a506bd575629",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/arm/kernel/hw_breakpoint.c"
    ],
    "versions": [
      {
        "version": "4.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.7",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.269",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.233",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.191",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.120",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.38",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.11.22",
        "lessThanOrEqual": "5.11.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12.5",
        "lessThanOrEqual": "5.12.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]