CVE-2024-45556
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 · uneditedCryptographic issue may arise because the access control configuration permits Linux to read key registers in TCSR.
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 confidenceThis is an access control misconfiguration in a secure processing environment (TCSR - Trusted Computing/Security Configuration Register) where Linux is incorrectly permitted to read cryptographic key registers. This could allow compromise of cryptographic operations by exposing sensitive key material to an untrusted software domain.
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
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/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 Qualcomm platform firmware versionCheck system information or firmware version strings on the device - look for Fastconnect 6900, Fastconnect 7800, Immersive Home 3210, Immersive Home 326, Ipq5300, Ipq5302, Ipq5312, or Ipq5332 identifiers in boot logs, /proc/cpuinfo, or vendor firmware documentationAffected if The device runs any of the listed Qualcomm firmware platforms (Fastconnect 6900/7800, Immersive Home 3210/326, Ipq5300/5302/5312/5332)
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Locate TCSR register access control configurationAccess the secure boot or security configuration interface provided by the Qualcomm firmware - this is typically available through JTAG debug, secure firmware debug mode, or vendor-specific management interfaces that expose TCSR (Trusted Computing/Security Configuration Register) settingsAffected if TCSR access control registers are readable through debug or management interfaces on the system
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Verify TCSR key register permissions for Linux/EL1Examine the TCSR access control registers to determine whether the Linux kernel or EL1 (Exception Level 1) is permitted read access to cryptographic key registers - check the specific permission bits that control non-secure/EL1 access to key storage registersAffected if The TCSR configuration shows read access is granted to Linux/EL1 for key registers (permission bits indicate non-secure/EL1 can read cryptographic key material)
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Confirm cryptographic key material exposureAttempt to read TCSR key registers from Linux userspace or EL1 if debug access permits - verify whether actual key values or key handles are returned rather than access denied errorsAffected if Reading TCSR key registers from Linux/EL1 returns actual key data or valid key handles instead of access denial
A system is affected if it uses any of the listed Qualcomm platforms AND the TCSR access control configuration permits Linux/EL1 to read cryptographic key registers, exposing sensitive key material to the untrusted software domain.
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 dataRestrict access control configuration to prevent Linux/EL1 (Exception Level 1) from reading TCSR key registers; ensure only trusted execution environments or secure firmware can access cryptographic keys.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 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 $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-45556 — 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-2024-45556 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
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