Vulnerability in libyal libmsiecf

[ Description ]Official description

libyal libmsiecf through 20260525 contains a double free vulnerability in libmsiecf_url_values_read_data() that allows attackers to corrupt heap memory via crafted partial URL records. Attackers can supply a crafted MSIE cache index.dat file whose recovered partial record has an oversized unknown_offset, crashing forensic tools processing it.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/libyal/libmsiecf
• github.com/libyal/libmsiecf/blob/20260525/libmsiecf/libmsiecf_url_values.c
• github.com/libyal/libmsiecf/commit/a99a703d190d62f6c21b6225cf84ce80037e45d5
• github.com/libyal/libmsiecf/issues/6
• hackmd.io/@haindpwn/libmsiecf-url-record-partial-recovery-double-free
• www.vulncheck.com/advisories/libyal-libmsiecf-through-20260525-double-free-via-libmsiec…