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media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common When VIDIOC_TRY_FMT is called with an unsupported pixel format on the OUTPUT queue, vdec_try_fmt_common() falls back to V4L2_PIX_FMT_MPEG2. However, if a distro has locally patched MPEG2 support out (as it has been broken for some time) the platform format table does not contain MPEG2 so find_format() returns NULL and the subsequent dereference of fmt_out->max_width triggers a NULL pointer dereference. Fix this by falling back to the first format in the platform's format array instead of hardcoding V4L2_PIX_FMT_MPEG2. This is always valid since every platform defines at least one format.

Announced Group revision 1
Original source ↗

CVE-2026-93236

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93236

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "276f28672bb6d5d5feca78db4219c7b5adf1be26",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "c620906fb1b2ad75d408ea9d06040d66952d4a31",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "3839b6be2279fc4f558723f2c0fbfc9c42070958",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "680a89683197cdfe4e03e6fd7755454c647d39c1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "f2375a308640e401c142c5426d52c3d10e016d25",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "96dafbae77f50bfe2228bcfedcd8652c5e5f08e8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "d61ba609c3226af3c84268ba606ea06ee63e511b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3e7f51bd96077acad6acd7b45668f65b44233c4e",
        "lessThan": "20aa934ace6917262ff579a73ec018d06a7bad1c",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/staging/media/meson/vdec/vdec.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.3",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/staging/media/meson/vdec/vdec.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93236

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#37934 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-93236 · Revision 1Source updated