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media: s2255: check firmware size before reading trailing marker

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: media: s2255: check firmware size before reading trailing marker s2255_probe() reads a 4-byte marker and version from the last 8 bytes of the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the firmware file is shorter than 8 bytes, fw_size - 8 underflows and the access reads out of bounds. Validate the firmware size before indexing.

Announced Source revision 1
Original source ↗

CVE-2026-89878

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-2026-89878

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": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "6f6a5b0b0a84c2de0e152f2841e57bc226db924f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "8eca0f85eeb0789be40e637bcf9a21c4265b6c6f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "ffc27411ea60b8a09f1fea3d664b65210fdeb454",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "5626785b0e4665326e4d96736c106161da09b2f0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "342632a4d8ba3fafc1556deee0b7a48dd7860336",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "7d221859ba45d7228d0138c9a3e55bd3bb31e14e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "14d962602c8bf86e63c9b9272be1f0360d0a448a",
        "lessThan": "330f2936ab768c7215322a476f033143e8891d28",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/media/usb/s2255/s2255drv.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.28"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.28",
        "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/media/usb/s2255/s2255drv.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89878

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36329 · Revision 1
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Publisher date
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