Nghttp2 is an implementation of HTTP/2 and its header compression algorithm HPACK in C.
A heap-use-after-free vulnerability has been discovered in nghttp2. Please review the CVE identifier referenced below for details.
The impact of the vulnerability is still unknown.
There is no known workaround at this time.
All nghttp2 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/nghttp2-1.6.0"