Heap corruption via overflowed pixel-buffer allocation
Published Apr 7, 2026 · Updated Apr 7, 2026
Heap buffer overflow in LibRaw Commit 8dc68e2 allows attackers to corrupt memory through a crafted floating-point DNG file. uncompressed_fp_dng_load_raw multiplies attacker-controlled tile dimensions and sample count using 32-bit arithmetic, then allocates the pixel buffer from the wrapped result. The default 2 GB max_raw_memory_mb blocks the flaw; exposure requires an application to raise it to about 16 GB and unpack untrusted DNG data.
Summary
What happened
Heap buffer overflow in LibRaw Commit 8dc68e2 allows attackers to corrupt memory through a crafted floating-point DNG file. uncompressed_fp_dng_load_raw multiplies attacker-controlled tile dimensions and sample count using 32-bit arithmetic, then allocates the pixel buffer from the wrapped result. The default 2 GB max_raw_memory_mb blocks the flaw; exposure requires an application to raise it to about 16 GB and unpack untrusted DNG data.
The record
- CVE
- CVE-2026-24450
- Published
- Apr 7, 2026
- Updated
- Apr 7, 2026
- Vendor
- LibRaw LLC
- Product
- LibRaw
- Classifications
- CWE-190, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 7, 2026CVE publishedPublication date reported by the CVE source.
- Apr 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=Commit 8dc68e2
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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Your stack
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