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Linux KernelOperating system · Linux

CVE-2024-45004

MEDIUM · 5.5 CVSS v3.1 Published 2024-09-04
Fix available
A fix is available. Upgrade to 6.10.7 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

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 · unedited
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: dcp: fix leak of blob encryption key Trusted keys unseal the key blob on load, but keep the sealed payload in the blob field so that every subsequent read (export) will simply convert this field to hex and send it to userspace. With DCP-based trusted keys, we decrypt the blob encryption key (BEK) in the Kernel due hardware limitations and then decrypt the blob payload. BEK decryption is done in-place which means that the trusted key blob field is modified and it consequently holds the BEK in plain text. Every subsequent read of that key thus send the plain text BEK instead of the encrypted BEK to userspace. This issue only occurs when importing a trusted DCP-based key and then exporting it again. This should rarely happen as the common use cases are to either create a new trusted key and export it, or import a key blob and then just use it without exporting it again. Fix this by performing BEK decryption and encryption in a dedicated buffer. Further always wipe the plain text BEK buffer to prevent leaking the key via uninitialized memory.

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

A detailed technical summary for this CVE is being prepared.

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
Linux KernelOperating system
Affected:>= 6.10, < 6.10.7= 6.11

CVSS 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
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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 · scoped
Upgrade available Upgrade to 6.10.7 or later
Fixed in 6.10.7
Vendor patch git.kernel.org →
Recommended fix High confidence

Linux Kernel 6.10.7 or later, or Linux Kernel 6.12 or later

  1. Identify the current kernel version using `uname -r`
  2. Check if the running kernel is affected: version >= 6.10 and < 6.10.7, or exactly 6.11
  3. Schedule a maintenance window for kernel upgrade
  4. Upgrade the Linux kernel to version 6.10.7 or later, or to version 6.12 or later which contains the fix
  5. Reboot the system to load the new kernel
  6. Verify the fix is applied by checking the kernel version and confirming the commit is included: `git log --oneline --all | grep 0e28bf61a5f9`
  7. For systems that cannot immediately upgrade, avoid exporting DCP-based trusted keys after import until the upgrade can be performed
Caveat Kernel upgrades may require reboot and could introduce compatibility changes with third-party kernel modules; ensure all proprietary drivers are compatible with the target kernel version

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-45004 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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