{"id":"SUSE-SU-2026:23301-1","summary":"Security update for go1.26","details":"This update for go1.26 fixes the following issues:\n\nUpdate to go1.26.6 (released 2026-08-13, bsc#1255111).\n\nSecurity issues fixed:\n\n- CVE-2026-33818: encoding/asn1: unenforced recursion limit can lead to stack exhaustion when parsing deeply-nested,\n  recursive structures (bsc#1275034).\n- CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation\n  bypass and privilege escalation (bsc#1266609).\n- CVE-2026-56853: net/http: missing timeout when doing unencrypted HTTP/2 check can lead to a denial of service\n  (bsc#1275028).\n- CVE-2026-56858: html/template: improper Javascript regexp context tracking allows for XSS attacks (bsc#1275033).\n- CVE-2026-56859: encoding/xml: missing recursion depth guard during decode operation can lead to stack exhaustion\n  and a denial of service (bsc#1275026).\n- CVE-2026-56860: net/url: quadratic time complexity in `resolvePath` when processing certain input can lead to high\n  memory allocation overhead and a denial of service (bsc#1275029).\n- CVE-2026-56862: crypto/tls: no limit set for handshake messages sent post-handshake allows for denial of service\n  (bsc#1275032).\n- CVE-2026-56864: x/mod/sumdb: unauthenticated hashes accepted in `Lookup` allows for a coordinating GOPROXY and\n  GOSUMDB to serve a client malicious module content (bsc#1275025).\n- CVE-2026-56865: x/mod/sumdb/tlog: improper transparency log tile verification allows for bypass on crafted input\n  and can lead to malicious module content to be accepted (bsc#1275024).\n\nChanges for go1.26.6:\n\n- go#79876 cmd/compile: prove misscompilation in slicemask folding leaves garbage in the upper bits\n- go#80099 cmd/compile: internal compiler error invalid heap allocated var without Heapaddr\n- go#80131 cmd/link: peCreateExportFile generates invalid .def file when output name has trailing dot (c-shared on\n  Windows)\n- go#80365 os: Root's MkdirAll can't create paths ending in forward slashes\n- go#80367 os: TestRootMultiReadFile fails on netbsd/arm64 after CL 797880\n- go#80369 os: TestRootConsistencyRemoveAll fails on Plan 9 after CL 797880\n- go#80394 runtime: arm64 found pointer to free object with safe code\n- go#80441 runtime: uninitialized register due to wrong ABI in mach_vm_region_trampoline leads to libc following\n  garbage stack data as a pointer\n- go#80478 cmd/compile: riscv64 miscompiles struct copy, corrupting a []byte slice field\n- go#80499 runtime: js/wasm: \"found bad pointer in Go heap\" -- link-layout-constant value recorded as a pointer in\n  the write-barrier buffer\n- go#80579 cmd/compile: regalloc uses unreliable type data (like v.Type.IsSigned()) to choose the restore of spills\n- go#80606 crypto/tls: escape hatch for FIPS 140-3 mode Extended Master Secret enforcement\n- go#80609 net, x/net/dns/dnsmessage: panic when parsing invalid SVCB record\n- go#80615 cmd/compile: mips64le misscompile OffPtr by a const which doesn't fit 32bits resulting in panic\n- go#80617 cmd/compile: mips/mips64, multiply/divide results spilled from HI/LO corrupted w/ big stack frames\n- go#80619 cmd/compile: prove bug causes invalid indirect call\n- go#80715 runtime: fpTracebackPartialExpand SIGSEGV under high panic load\n","modified":"2026-09-10T18:23:09.451594508Z","published":"2026-08-19T09:11:06Z","related":["CVE-2026-33818","CVE-2026-39821","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-56864","CVE-2026-56865"],"upstream":["CVE-2026-33818","CVE-2026-39821","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-56864","CVE-2026-56865"],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623301-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1255111"},{"type":"REPORT","url":"https://bugzilla.suse.com/1266609"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275024"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275025"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275026"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275028"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275029"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275032"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275033"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275034"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-33818"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-39821"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56853"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56858"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56859"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56860"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56862"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56864"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-56865"}],"affected":[{"package":{"name":"go1.26","ecosystem":"SUSE:Linux Enterprise Server 16.0","purl":"pkg:rpm/suse/go1.26&distro=SUSE%20Linux%20Enterprise%20Server%2016.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.6-160000.1.1"}]}],"ecosystem_specific":{"binaries":[{"go1.26-doc":"1.26.6-160000.1.1","go1.26-race":"1.26.6-160000.1.1","go1.26":"1.26.6-160000.1.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:23301-1.json"}},{"package":{"name":"go1.26","ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","purl":"pkg:rpm/suse/go1.26&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.6-160000.1.1"}]}],"ecosystem_specific":{"binaries":[{"go1.26":"1.26.6-160000.1.1","go1.26-doc":"1.26.6-160000.1.1","go1.26-race":"1.26.6-160000.1.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:23301-1.json"}}],"schema_version":"1.9.0"}