CVE-2026-120456

The record

L-SMASH through 2.14.5 contains a heap out-of-bounds write vulnerability in isom_read_hdlr() and isom_read_dref_entry() in core/read.c triggered by oversized box sizes. Attackers can supply crafted MP4 or MOV files declaring hdlr or url box sizes larger than remaining data, stalling the stream position and corrupting heap memory to crash applications.

Affected packages

Related vulnerabilities

• CVE-2026-120931 Out of bounds write in WebGL in Google Chrome on on Android prior to 156.0.8078.47… CWE-787
• CVE-2026-61495 TinyUSB through 0.21.0, fixed in commit e85c2b8, contains an out-of-bounds write… CWE-787
• CVE-2026-121037 Out of bounds write in ANGLE in Google Chrome on on Windows prior to 157.0.8103.38… CWE-787
• CVE-2026-120952 An out-of-bounds write in the MongoDB Atlas SQL ODBC Driver may be triggered when a value… CWE-787
• CVE-2026-120959 A memory-handling flaw in the MongoDB Atlas SQL ODBC Driver can cause values returned for… CWE-787
• CVE-2026-63418 Monitoring Plugins is a suite of plugins for monitoring applications. CWE-787
• CVE-2026-40661 An out-of-bounds write (OOW) condition in the AMD Compressonator SDK could allow an… CWE-787
• CVE-2026-121513 Off-by-one Heap Overflow in µD3TN v0.15.1 SPP Parser allows Unauthenticated Remote… CWE-787