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Critical severity9.8NVD Advisory· Published Dec 21, 2017· Updated Jun 17, 2026

CVE-2017-17821

CVE-2017-17821

Description

WTF/wtf/FastBitVector.h in WebKit, as distributed in Safari Technology Preview Release 46, allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because it calls the FastBitVectorWordOwner::resizeSlow function (in WTF/wtf/FastBitVector.cpp) for a purpose other than initializing a bitvector size, and resizeSlow mishandles cases where the old array length is greater than the new array length.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Apple Inc./Webkitinferred2 versions
    <= Safari Technology Preview Release 46+ 1 more
    • (no CPE)range: <= Safari Technology Preview Release 46
    • (no CPE)range: Safari Technology Preview Release 46
  • Apple Inc./Safari
    cpe:2.3:a:apple:safari:46:*:*:*:technology_preview:*:*:*

Patches

Vulnerability mechanics

References

2

News mentions

0

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