CVE-2017-17821

WTF/wtf/FastBitVector.h in WebKit, as distributed in Safari Technology ...

Published 21 Dec 2017Modified 17 Jun 2026CWE 119

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD.

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.

Affected packages and fixed versions

Source	Package	Fixed in
debian 11	webkit2gtk	2.22.0-2
debian 12	webkit2gtk	2.22.0-2
debian 13	webkit2gtk	2.22.0-2
debian 14	webkit2gtk	2.22.0-2
echo	webkit2gtk	2.22.0-2

References

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