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DEBIAN-CVE-2026-33317

Type: advisorySource: OSV1 source record

OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. In versions 3.13.0 through 4.10.0, missing checks in `entry_get_attribute_value()` in `ta/pkcs11/src/object.c` can lead to out-of-bounds read from the PKCS#11 TA heap or a crash. When chained with the OOB read, the PKCS#11 TA function `PKCS11_CMD_GET_ATTRIBUTE_VALUE` or `entry_get_attribute_value()` can, with a bad template parameter, be tricked into reading at most 7 bytes beyond the end of the template buffer and writing beyond the end of the template buffer with the content of an attribute value of a PKCS#11 object. Commits e031c4e562023fd9f199e39fd2e85797e4cbdca9, 16926d5a46934c46e6656246b4fc18385a246900, and 149e8d7ecc4ef8bb00ab4a37fd2ccede6d79e1ca contain patches and are anticipated to be part of version 4.11.0.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-33317

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: osv:DEBIAN-CVE-2026-33317

optee-os

Source reference: /affected/0/package/name

Affected versions
4.10.0-1

Source reference: /affected/0/versions

4.10.0-2

Source reference: /affected/0/versions

4.5.0-2

Source reference: /affected/0/versions

4.7.0-1

Source reference: /affected/0/versions

4.8.0-1

Source reference: /affected/0/versions

4.9.0-1

Source reference: /affected/0/versions

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.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "optee-os",
      "purl": "pkg:deb/debian/optee-os?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "4.10.0-1",
      "4.10.0-2",
      "4.5.0-2",
      "4.7.0-1",
      "4.8.0-1",
      "4.9.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33317.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#55925 · Revision 1
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Publisher date
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