CVE-2024-7881
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 · uneditedAn unprivileged context can trigger a data memory-dependent prefetch engine to fetch the contents of a privileged location and consume those contents as an address that is also dereferenced.
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 · high confidenceA CPU data memory-dependent prefetch engine vulnerability allows an unprivileged attacker to trigger prefetch instructions that read privileged memory contents and use those contents as pointers for further memory dereferences, potentially leaking sensitive data via speculative execution side channels.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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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Identify the CPU architecture and modelRun 'lscpu' or check /proc/cpuinfo to see the processor family and model name. Look for Arm Cortex X3, X4, X925, or Neoverse V2/V3 identifiers.Affected if The CPU is one of the listed affected models: Arm C1 Premium/Pro/Ultra, Cortex X3, X4, X925, or Neoverse V2/V3.
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Check system firmware vendorRun 'dmesg | grep -i firmware' or check /sys/class/dmi/id/* files to identify the system vendor and firmware provider.Affected if The firmware is provided by Arm and matches one of the affected product lines.
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Inspect firmware versionCheck the installed CPU microcode/firmware version via 'cat /sys/devices/system/cpu/microcode/version' or via 'dmesg | grep -i microcode'. Compare against any vendor-released updates.Affected if The installed firmware version is older than the latest vendor-provided update for the affected CPU model.
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Verify speculative execution mitigation statusCheck if the OS has enabled any speculative execution mitigations by reviewing /sys/devices/system/cpu/vulnerabilities/* or running 'lsmep' if available on Arm systems.Affected if Speculative execution mitigations are not applied or the kernel does not recognize the vulnerability.
A system is affected if it runs on any of the listed Arm CPU models (Cortex X3/X4/X925 or Neoverse V2/V3, or C1 variants) and the firmware/microcode has not been updated to address the prefetch engine vulnerability.
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.
From vendor dataApply CPU microcode/firmware updates from the hardware vendor and any relevant OS/kernel security patches; consider disabling affected prefetch features in firmware settings if available and performance-impact acceptable.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-7881 — 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-2024-7881 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
- No spam, self-promotion, credentials, or personal data