Debian/bouncycastle: high 7.5
In Bouncy Castle for Java before 1.86, the MLS implementation (org.bouncycastle.mls) holds RFC 9420's uint32 leaf_index in a signed int, so a wire value with the top bit set decodes to a negative numb
Action: Upgrade bouncycastle to 1.86-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.86-1 | - |
Fixed versions
| 1.86-1 |
Sources
- osv: DEBIAN-CVE-2026-17507#Debian:14/bouncycastle
- https://security-tracker.debian.org/tracker/CVE-2026-17507
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