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Linux KernelOperating system · Linux

CVE-2024-53234

MEDIUM · 5.5 CVSS v3.1 Published 2024-12-27
Fix available
A fix is available. Upgrade to 5.5 / 5.11 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: erofs: handle NONHEAD !delta[1] lclusters gracefully syzbot reported a WARNING in iomap_iter_done: iomap_fiemap+0x73b/0x9b0 fs/iomap/fiemap.c:80 ioctl_fiemap fs/ioctl.c:220 [inline] Generally, NONHEAD lclusters won't have delta[1]==0, except for crafted images and filesystems created by pre-1.0 mkfs versions. Previously, it would immediately bail out if delta[1]==0, which led to inadequate decompressed lengths (thus FIEMAP is impacted). Treat it as delta[1]=1 to work around these legacy mkfs versions. `lclusterbits > 14` is illegal for compact indexes, error out too.

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:>= 5.4.251, < 5.5>= 5.10.188, < 5.11>= 5.15, < 6.1.127>= 6.2, < 6.6.64>= 6.7, < 6.11.11>= 6.12, < 6.12.2

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
None
Integrity
None
Availability
High

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

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 5.5 / 5.11 / 6.1.127 or later
Fixed in 5.55.116.1.127
Vendor patch git.kernel.org →
Recommended fix High confidence

Upgrade to kernel 5.5+ (for 5.4.x), 5.11+ (for 5.10.x), 6.1.127+ (for 6.0.x-6.1.x), 6.6.64+ (for 6.2.x-6.6.x), or 6.7+ (for 6.7.x)

  1. Identify the current running kernel version using `uname -r`
  2. Determine the appropriate upgrade path based on your current kernel branch (5.4.x, 5.10.x, 5.15.x, or 6.2.x+)
  3. Upgrade to a kernel version that includes the fix: 5.5 or later for 5.4.x users; 5.11 or later for 5.10.x users; 6.1.127 or later for 6.0.x/6.1.x users; 6.6.64 or later for 6.2.x-6.6.x users; or 6.7+ for latest branch
  4. For production systems, first test the kernel upgrade in a non-production environment
  5. Apply the upgrade via your distribution's package manager (e.g., `apt-get update && apt-get install linux-image-<version>` for Debian/Ubuntu, or `yum update kernel` for RHEL/CentOS)
  6. Reboot the system to load the new kernel
  7. Verify the fix is applied by checking the kernel version and confirming the erofs module loads without warnings
Caveat Kernel upgrades may introduce compatibility issues with proprietary drivers or older software; ensure compatibility testing before production deployment

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-2024-53234 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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