CVE-2021-46943 media: staging/intel-ipu3: Fix set_fmt error handling

2024-02-2718:40:29

Linux

www.cve.org

vulnerability resolved

error handling patch

linux kernel

media

staging/intel-ipu3

v4l2-compliance

ram allocation

oops

sw-iommu

general protection fault

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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

media: staging/intel-ipu3: Fix set_fmt error handling

If there in an error during a set_fmt, do not overwrite the previous
sizes with the invalid config.

Without this patch, v4l2-compliance ends up allocating 4GiB of RAM and
causing the following OOPs

[ 38.662975] ipu3-imgu 0000:00:05.0: swiotlb buffer is full (sz: 4096 bytes)
[ 38.662980] DMA: Out of SW-IOMMU space for 4096 bytes at device 0000:00:05.0
[ 38.663010] general protection fault: 0000 [#1] PREEMPT SMP

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/staging/media/ipu3/ipu3-v4l2.c"
    ],
    "versions": [
      {
        "version": "6d5f26f2e045",
        "lessThan": "a03fb1e8a110",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6d5f26f2e045",
        "lessThan": "c6b81b897f6f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6d5f26f2e045",
        "lessThan": "34892ea93838",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6d5f26f2e045",
        "lessThan": "6fb617e37a39",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6d5f26f2e045",
        "lessThan": "ad91849996f9",
        "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/staging/media/ipu3/ipu3-v4l2.c"
    ],
    "versions": [
      {
        "version": "5.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.2",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.118",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.36",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.11.20",
        "lessThanOrEqual": "5.11.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12.3",
        "lessThanOrEqual": "5.12.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]