{"id":"RLSA-2026:98502","summary":"Important: gvisor-tap-vsock security update","details":"A replacement for libslirp and VPNKit, written in pure Go. It is based on the network stack of gVisor. Compared to libslirp, gvisor-tap-vsock brings a configurable DNS server and dynamic port forwarding.\n\nSecurity Fix(es):\n\n* encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)\n\n* net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853)\n\n* crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)\n\n* net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667)\n\n* crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031)\n\n* net/textproto: mime/multipart: golang: golang: Denial of Service via memory limit bypass in multipart form parsing (CVE-2026-94440)\n\n* crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-11-13T12:45:06.130578967Z","published":"2026-11-13T12:04:43.442503Z","upstream":["CVE-2026-111943","CVE-2026-33818","CVE-2026-56853","CVE-2026-56862","CVE-2026-78667","CVE-2026-94440","CVE-2026-97031"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:98502"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:98502"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515815"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515827"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515839"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548334"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548336"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548341"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2556068"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:98502"}],"affected":[{"package":{"name":"gvisor-tap-vsock","ecosystem":"Rocky 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Linux:9","purl":"pkg:rpm/rocky-linux/gvisor-tap-vsock-gvforwarder?distro=rocky-linux-9&epoch=6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6:0.8.8-2.el9_9"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:98502.json"}},{"package":{"name":"gvisor-tap-vsock-gvforwarder-debuginfo","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/gvisor-tap-vsock-gvforwarder-debuginfo?distro=rocky-linux-9&epoch=6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6:0.8.8-2.el9_9"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:98502.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}