CVE-2026-116539
mediumNetty netty-tcnative before 2.0.84.Final contains a heap buffer overflow vulnerability in the tcn_write_to_bytebuffer BIO callback caused by failing to wrap th…
Netty netty-tcnative before 2.0.84.Final contains a heap buffer overflow vulnerability in the tcn_write_to_bytebuffer BIO callback caused by failing to wrap the non-application ring buffer write index. Remote TLS peers can drive handshake, renegotiation, or post-handshake messages into this buffer, triggering an out-of-bounds memcpy that crashes the JVM process.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/netty/netty-tcnative disclosure@vulncheck.com
- https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final/openssl-dy... disclosure@vulncheck.com
- https://github.com/netty/netty-tcnative/commit/92dd66fd1243d85c05a61288f96367a70260b6b8 disclosure@vulncheck.com
- https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.84.Final disclosure@vulncheck.com
- https://github.com/netty/netty-tcnative/security/advisories/GHSA-gf9q-9mg7-g5qh disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/netty-netty-tcnative-before-2.0.84-final-heap-buffer-... disclosure@vulncheck.com