118 lines
5.5 KiB
JSON
118 lines
5.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-44362",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-05-05T20:15:20.630Z",
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"datePublished": "2026-07-06T19:33:48.666Z",
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"dateUpdated": "2026-07-06T20:51:51.914Z"
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},
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"containers": {
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"cna": {
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"title": "OP-TEE's subkey rollback protection can be bypassed with older subkey versions",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-285",
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"lang": "en",
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"description": "CWE-285: Improper Authorization",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "LOCAL",
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"availabilityImpact": "NONE",
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-fhcg-pp56-8v75",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-fhcg-pp56-8v75"
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}
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],
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"affected": [
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{
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"vendor": "OP-TEE",
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"product": "optee_os",
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"versions": [
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{
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"version": ">= 3.20.0, < 4.11.0",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-07-06T19:33:48.666Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "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. Starting in version 3.20.0 and prior to version 4.11.0, a vulnerability in OP-TEE’s subkey rollback protection allows the use of revoked or older subkey versions because the system fails to propagate versioning data during the Trusted Application (TA) loading process. In `core/crypto/signed_hdr.c`, the function `shdr_load_pub_key()` parses subkey headers but does not assign the `subkey_version` to the runtime `shdr_pub_key` structure. As a result, the `key->version` field remains at zero regardless of the version specified in the header. When `ree_fs_ta_open()` in `core/kernel/ree_fs_ta.c` calls `check_update_version()`, it passes this zeroed version to the rollback database. Because the database never receives a non-zero version to record, it never advances, effectively bypassing the rollback check and allowing TAs signed with downgraded subkey chains to load successfully. This impacts OP-TEE mainline configurations that utilize subkey-based signing chains for Trusted Application (TA) authentication. Version 4.11.0 contains a patch. No known workarounds are available."
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}
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],
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"source": {
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"advisory": "GHSA-fhcg-pp56-8v75",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-06T20:51:43.694755Z",
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"id": "CVE-2026-44362",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-07-06T20:51:51.914Z"
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}
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}
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]
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}
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} |