CVE-2022-26454
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn teei, there is a possible memory corruption due to an integer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06664701; Issue ID: ALPS06664701.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceInteger overflow in the teei (Trusted Execution Environment Interface) driver causes memory corruption. This occurs during size calculations for buffer allocations, where the overflow results in undersized buffers being allocated, leading to subsequent memory corruption when data is written. The vulnerability is exploitable locally for privilege escalation from System privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 11.0= 12.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check Android versionRun 'getprop ro.build.version.release' in a shell or check Settings > About Phone > Android versionAffected if Version returns exactly 11.0 or 12.0 (exact matches only)
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Identify teei driver presenceCheck for teei driver by running 'ls -la /dev/tee*' or 'cat /proc/modules | grep tee'Affected if teei driver device nodes or module entries exist in /dev or /proc/modules
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Confirm teei driver is activeCheck /sys/kernel/tee directory exists, or run 'getprop ro.crypto.state' to see if TEE is in useAffected if TEE subsystem is initialized and teei driver is actively handling requests
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Verify kernel build includes teeiIf you have kernel access, check for CONFIG_TEE=y or teei.ko in the kernel boot image or /system/lib/modules/Affected if teei driver is compiled into the kernel or loaded as a module
Device is affected only if running Android 11.0 or 12.0 exactly AND the teei TEE driver is present and active in the system.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedApply vendor patch ALPS06664701 via firmware update; verify TEE functionality and security post-patch.
- Identify if the device uses a MediaTek chipset containing the teei component
- Contact the device OEM for the security patch containing ALPS06664701
- Apply the vendor patch through the device manufacturer's security update channel
- Verify the patch has been applied by checking the device's security patch level
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing12.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,720.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-26454 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-26454 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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