SUSE CVE-2026-17507

In Bouncy Castle for Java before 1.86, the MLS implementation org.bouncycastle.mls holds RFC 9420's uint32 leafindex in a signed int, so a wire value with the top bit set decodes to a negative number. That is a legitimate encoding rather than malformed input, and it must still decode, since the M...

Signed to Unsigned Conversion Error

Overview Affected versions of this package are vulnerable to Signed to Unsigned Conversion Error due to unsigned leafindex values being compared as signed integers in GroupKeySet.SecretTree.hasLeaf and Group.validateRemove. An attacker can exhaust heap memory and crash the JVM by sending a small...

CVE-2026-17507

In Bouncy Castle for Java before 1.86, the MLS implementation org.bouncycastle.mls holds RFC 9420's uint32 leafindex in a signed int, so a wire value with the top bit set decodes to a negative number. That is a legitimate encoding rather than malformed input, and it must still decode, since the M...