Multiple "endianness errors" in libgadu in ekg before 1.6rc2 allow remote attackers to cause a denial of service (invalid behavior in applications) on big-endian systems.

Multiple "memory alignment errors" in libgadu, as used in ekg before 1.6rc2, Gaim before 1.5.0, and other packages, allows remote attackers to cause a denial of service (bus error) on certain architectures such as SPARC via an incoming message.

Multiple integer signedness errors in libgadu, as used in ekg before 1.6rc2 and other packages, may allow remote attackers to cause a denial of service or execute arbitrary code.