SUSE-SU-2026:4866-1

This update for go1.26-openssl fixes the following issues:

Update to version 1.26.10 (bsc#1255111, jsc#SLE-18320):

• CVE-2026-56857: os: Root.Mkdir(All) can follow junctions out of the root on Windows (bsc#1284766).
• CVE-2026-56866: net/http: HTTP/1 client connection desynchronization after CONNECT rejection (bsc#1284767).
• CVE-2026-78659: net/http: HTTP/2 server memory exhaustion due to Trailer headers (bsc#1284768).
• CVE-2026-78660: net/http: HTTP/2 transport accepts malformed framing-related headers (bsc#1284769).
• CVE-2026-78663: net/http: double flow control refund on HTTP/2 server streams (bsc#1284770).
• CVE-2026-78667: net/http: lack of limit on size of parsed Range headers (bsc#1284771).
• CVE-2026-78669: net/http: excessive CPU consumption from repeated initial window changes (bsc#1284772).
• CVE-2026-94439: net/http: HTTP/1 server connection desynchronization after 2xx CONNECT response (bsc#1284773).
• CVE-2026-94440: net/textproto, mime/multipart: memory limit bypass when parsing MIME headers (bsc#1284774).
• CVE-2026-94444: cmd/go: checksum bypass for golang.org/fips140 (bsc#1284775).
• CVE-2026-94447: cmd/go: checksum database bypass for golang.org/toolchain (bsc#1284776).
• CVE-2026-94448: html/template: reset context tracking on consecutive template expressions (bsc#1284777).
• CVE-2026-97030: html/template: recognize yield as regexp preceder keyword (bsc#1284778).
• CVE-2026-97031: crypto/tls: reject malformed ECH outer extension references (bsc#1284779).
• CVE-2026-97032: net/http: HTTP/2 server crash due to HPACK encoder race (bsc#1284780).
• CVE-2026-111943: crypto/x509: mitigation for security concerns with a specific Certificate Authority (bsc#1286317, bsc#1286261).

Changes:

• go#81144 runtime: mutex profiling can deadlock Windows asynchronous preemption during GC
• go#81225 runtime: netpoll: eventfd ready for something unexpected
• go#81251 lib/fips140: fix ML-KEM CAST and re-seal v1.26.0
• go#81295 cmd/compile: internal compiler error: MoveLoop too small
• go#81318 os,internal/poll: NewFile on an inherited overlapped stdout pipe hangs a sibling's WriteFile (Windows)
• go#81401 os: go 1.25.x regression on RemoveAll for oldest Windows 10 build 10240
• go#81436 runtime: intermittent SIGBUS (unaligned access) in netpoll on mips64le (Go 1.27)
• go#81668 cmd/compile: go1.27 miscompiles &slice[i].Field on an append-built slice; returned pointer aliases reused memory
• go#81689 cmd/compile: slice allocation reuses stack backing store incorrectly
• go#81860 cmd/go: vet reports no diagnostics for a package that an earlier run vetted as a dependency
• go#81889 cmd/link: plugin.Open fails on macOS 27: LC_DYLD_CHAINED_FIXUPS seg_count not updated after combining DWARF
• go#81152 cmd/compile/internal/test: TestMergeLocalsIntegration failures
• go#81113 debug/elf: applyRelocationsPPC was broken by CL 705075
• go#80889 os: TestRootMultiMkdirAllShallow failures on openbsd
• go#80851 cmd/go: pseudo #cgo directive FFLAGS value mixed up with CXXFLAGS in Go 1.26
• go#80827 runtime: async preemption corrupts AVX (YMM) state on netbsd/amd64