LHa is a console-based program for packing and unpacking LHarc archives.
A buffer overflow in LHa’s compression code was discovered which can be triggered by a crafted input file.
A remote attacker could send a specially crafted file possibly resulting in a Denial of Service condition.
There is no known workaround at this time.
All LHa users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/lha-114i_p20201004"