PT-2025-45967 · Julia · Harfbuzz Icu Jll+1

Published 2025-10-21 · Updated 2025-10-21

OSV

hb-ot-layout-gsubgpos.hh in HarfBuzz through 6.0.0 allows attackers to trigger O(n^2) growth via consecutive marks during the process of looking back for base glyphs when attaching marks.

Related Identifiers

JLSEC-2025-175

Affected Products

Harfbuzz Icu Jll

Harfbuzz Jll

References · 7

• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWCHWSICWVZSAXP2YAXM65JC2GR53547 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZ5M2GSAIHFPLHYJXUPQ2QDJCLWXUGO3 · Vendor Advisory
• https://osv.dev/vulnerability/JLSEC-2025-175 · Vendor Advisory
• https://github.com/harfbuzz/harfbuzz/commit/85be877925ddbf34f74a1229f3ca1716bb6170dc · Note
• https://github.com/harfbuzz/harfbuzz/blob/2822b589bc837fae6f66233e2cf2eef0f6ce8470/src/hb-ot-layout-gsubgpos.hh · Note
• https://chromium.googlesource.com/chromium/src/+/e1f324aa681af54101c1f2d173d92adb80e37088/DEPS#361 · Note
• https://security.netapp.com/advisory/ntap-20230725-0006 · Note