CVE-2024-35919 media: mediatek: vcodec: adding lock to protect encoder context list

2024-05-1910:10:31

Linux

github.com

linux kernel

mediatek

vcodec

lock

encoder context list

7.2 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%

JSON

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

media: mediatek: vcodec: adding lock to protect encoder context list

Add a lock for the ctx_list, to avoid accessing a NULL pointer
within the ‘vpu_enc_ipi_handler’ function when the ctx_list has
been deleted due to an unexpected behavior on the SCP IP block.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_vpu.c",
      "drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.c",
      "drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.h",
      "drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c"
    ],
    "versions": [
      {
        "version": "1972e32431ed",
        "lessThan": "41671f0c0182",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1972e32431ed",
        "lessThan": "51c84a8aac6e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1972e32431ed",
        "lessThan": "afaaf3a0f647",
        "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/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_vpu.c",
      "drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.c",
      "drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.h",
      "drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c"
    ],
    "versions": [
      {
        "version": "6.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.6",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.27",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.6",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]