{"id":"SUSE-SU-2026:4625-1","summary":"Security update for go1.27","details":"This update for go1.27 fixes the following issues:\n\nUpdate to go1.27.2 (bsc#1272545):\n\n- CVE-2026-56857: os: Root.Mkdir(All) can follow junctions out of the root on Windows (bsc#1284766).\n- CVE-2026-56866: net/http: HTTP/1 client connection desynchronization after CONNECT rejection (bsc#1284767).\n- CVE-2026-78659: net/http: HTTP/2 server memory exhaustion due to Trailer headers (bsc#1284768).\n- CVE-2026-78660: net/http: HTTP/2 transport accepts malformed framing-related headers (bsc#1284769).\n- CVE-2026-78663: net/http: double flow control refund on HTTP/2 server streams (bsc#1284770).\n- CVE-2026-78667: net/http: lack of limit on size of parsed Range headers (bsc#1284771).\n- CVE-2026-78669: net/http: excessive CPU consumption from repeated initial window changes (bsc#1284772).\n- CVE-2026-94439: net/http: HTTP/1 server connection desynchronization after 2xx CONNECT response (bsc#1284773).\n- CVE-2026-94440: net/textproto, mime/multipart: memory limit bypass when parsing MIME headers (bsc#1284774).\n- CVE-2026-94444: cmd/go: checksum bypass for golang.org/fips140 (bsc#1284775).\n- CVE-2026-94447: cmd/go: checksum database bypass for golang.org/toolchain (bsc#1284776).\n- CVE-2026-94448: html/template: reset context tracking on consecutive template expressions (bsc#1284777).\n- CVE-2026-97030: html/template: recognize yield as regexp preceder keyword (bsc#1284778).\n- CVE-2026-97031: crypto/tls: reject malformed ECH outer extension references (bsc#1284779).\n- CVE-2026-97032: net/http: HTTP/2 server crash due to HPACK encoder race (bsc#1284780).\n\nChanges:\n\n- go1.27.2 (released 2026-10-08) includes security fixes to the go\n command, and the crypto/tls, html/template, net/http,\n net/textproto, and os packages, as well as bug fixes to the\n compiler, the linker, the runtime, the cover tool, the go fix\n command, vet, and the compress/flate, crypto/mlkem,\n encoding/json, encoding/json/v2, net/http, and os packages.\n * go#81084 encoding/json: Unmarshal leaves +/-Inf in the destination on float overflow in Go 1.27\n * go#81145 runtime: mutex profiling can deadlock Windows asynchronous preemption during GC\n * go#81226 runtime: netpoll: eventfd ready for something unexpected\n * go#81229 encoding/json: json.UnsupportedValueError returns an Invalid Value instead of a Float value\n * go#81233 compress/flate: Writer with a preset dictionary emits the dictionary into the output stream\n * go#81252 lib/fips140: fix ML-KEM CAST and re-seal v1.26.0\n * go#81296 cmd/compile: internal compiler error: MoveLoop too small\n * go#81306 cmd/compile: go1.27.0 unified export data loses method order, breaking objectpath, crashing staticcheck\n * go#81324 plugin: loading multiple plugins corrupts stdlib types in Go 1.27\n * go#81353 runtime: Go 1.27.0: SIGSEGV crash with generic function + pointer type parameter + embedded interface\n * go#81362 encoding/json: Marshal now honors MarshalText for string-kind map keys\n * go#81374 os,internal/poll: NewFile on an inherited overlapped stdout pipe hangs a sibling's WriteFile (Windows)\n * go#81389 cmd/fix, x/tools/go/analysis/passes/modernize: errorsastype rewrites errors.As target interface that does not implement error\n * go#81402 os: go 1.25.x regression on RemoveAll for oldest Windows 10 build 10240\n * go#81411 net/http: concurrent response body Read and Close can deadlock with automatic draining in Go 1.27\n * go#81437 runtime: intermittent SIGBUS (unaligned access) in netpoll on mips64le (Go 1.27)\n * go#81469 runtime: ios/arm64 binaries executed outside an app bundle change working directory on startup\n * go#81515 net/http: readLoop reads Response.ContentLength after Body.Close returns\n * go#81516 net/http: Response.Body.Close returns the earlier Read error after a non-EOF Read failure\n * go#81522 net/http: Response.Trailer race due to response body draining\n * go#81580 testing: go test -v doubles ESC (0x1b) in t.Log output since Go 1.27, corrupting ANSI colors in some terminals\n * go#81666 cmd/compile: Embedded interfaces using tail calls cause race detector stack growth\n * go#81667 cmd/compile: go1.27 miscompiles &slice[i].Field on an append-built slice; returned pointer aliases reused memory\n * go#81706 cmd/compile: ICE on 386 when inlining nested bit rotations (Int64Lo not lowered)\n * go#81816 net/http: Request.TLS is not properly populated for HTTP/2 requests\n * go#81818 cmd/internal/obj/ppc64: async preemption bug in BR (CTR)\n * go#81829 runtime: windows/amd64 stack corruption when LockOSThread wraps registry calls (new in Go 1.27)\n * go#81832 cmd/cover: NumStmt duplicated across split blocks, inflating statement coverage\n * go#81861 cmd/go: vet reports no diagnostics for a package that an earlier run vetted as a dependency\n * go#81890 cmd/link: plugin.Open fails on macOS 27: LC_DYLD_CHAINED_FIXUPS seg_count not updated after combining DWARF\n","modified":"2026-10-13T10:30:05.897991531Z","published":"2026-10-12T08:25:05Z","related":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"],"upstream":["CVE-2026-56857","CVE-2026-56866","CVE-2026-78659","CVE-2026-78660","CVE-2026-78663","CVE-2026-78667","CVE-2026-78669","CVE-2026-94439","CVE-2026-94440","CVE-2026-94444","CVE-2026-94447","CVE-2026-94448","CVE-2026-97030","CVE-2026-97031","CVE-2026-97032"],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20264625-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1272545"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284766"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284767"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284768"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284769"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284770"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284771"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284772"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284773"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284774"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284775"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284776"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284777"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284778"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284779"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284780"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56857"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56866"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-78659"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-78660"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-78663"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-78667"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-78669"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-94439"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-94440"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-94444"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-94447"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-94448"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-97030"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-97031"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-97032"}],"affected":[{"package":{"name":"go1.27","ecosystem":"SUSE:Linux 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