PT-2025-46013 · Julia · Expat Jll

Published 2025-10-14 · Updated 2025-10-14

OSV

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

Related Identifiers

JLSEC-2025-42

Affected Products

Expat Jll

References · 10

• https://debian.org/security/2022/dsa-5073 · Vendor Advisory
• https://osv.dev/vulnerability/JLSEC-2025-42 · Vendor Advisory
• https://github.com/libexpat/libexpat/pull/534 · Note
• https://github.com/libexpat/libexpat/issues/531 · Note
• https://tenable.com/security/tns-2022-05 · Note
• http://openwall.com/lists/oss-security/2022/01/17/3 · Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf · Note
• https://security.gentoo.org/glsa/202209-24 · Note
• https://security.netapp.com/advisory/ntap-20220121-0004 · Note
• https://bugzilla.mozilla.org/show_bug.cgi?id=1217609 · Note