CVE-2024-25986
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 ppmp_unprotect_buf of drm_fw.c, there is a possible compromise of protected memory due to a logic error in the code. This could lead to local escalation of privilege to TEE with no additional execution privileges needed. User interaction is not needed for exploitation.
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 confidenceA logic error in the ppmp_unprotect_buf function within drm_fw.c allows protected memory to be compromised, enabling local privilege escalation to the Trusted Execution Environment (TEE) without requiring additional execution privileges or user interaction.
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= 13.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 'adb shell getprop ro.build.version.release' or check Settings > About Phone > Android versionAffected if The version displayed is exactly 13.0 (not 13.0.x, just 13.0)
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Verify DRM firmware component presenceCheck for the presence of drm_fw.c or related DRM firmware drivers in /system/lib/modules or /vendor/lib/modules directoriesAffected if The drm_fw.c component is present in the system's kernel or firmware modules
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Confirm TEE accessibility configurationCheck if the device has a Trusted Execution Environment (TEE) enabled by examining /sys/class/misc/tee or running 'ls /dev/tee*'Affected if TEE devices are present and accessible, indicating the vulnerable code path could be triggered
If the Android version is exactly 13.0 and the device contains the affected drm_fw.c component with an active TEE, the environment is vulnerable to local privilege escalation via the ppmp_unprotect_buf logic error.
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 · scopedReview and fix the logic error in the ppmp_unprotect_buf function in drm_fw.c that improperly handles memory protection; apply vendor-provided patches for this vulnerability to prevent unauthorized TEE access.
Android 14 or later (which includes the security fix for this vulnerability)
- 1. Check the current Android version on the affected device by going to Settings > About Phone > Android version
- 2. Go to Settings > System > System update to check for available updates
- 3. Apply any available Android security updates. This vulnerability was addressed in the Android security bulletin for the month the patch was released
- 4. Verify the device has received the update containing the fix for CVE-2024-25986 by checking Settings > About Phone > Security patch level
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 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 $6,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-25986 — 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-2024-25986 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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