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

AI Score

7.2

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

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

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "1972e32431ed",
        "lessThan": "41671f0c0182",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1972e32431ed",
        "lessThan": "51c84a8aac6e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1972e32431ed",
        "lessThan": "afaaf3a0f647",
        "versionType": "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"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.6"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.6",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "6.6.27",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.8.6",
        "versionType": "custom",
        "lessThanOrEqual": "6.8.*"
      },
      {
        "status": "unaffected",
        "version": "6.9",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "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"
    ],
    "defaultStatus": "affected"
  }
]