SUSE-SU-2026:4625-1: important: Security update for go1.27
SLE-SECURITY-UPDATES
null at suse.de
Mon Oct 12 16:30:33 UTC 2026
# Security update for go1.27
Announcement ID: SUSE-SU-2026:4625-1
Release Date: 2026-10-12T08:25:06Z
Rating: important
References:
* bsc#1272545
* bsc#1284766
* bsc#1284767
* bsc#1284768
* bsc#1284769
* bsc#1284770
* bsc#1284771
* bsc#1284772
* bsc#1284773
* bsc#1284774
* bsc#1284775
* bsc#1284776
* bsc#1284777
* bsc#1284778
* bsc#1284779
* bsc#1284780
Cross-References:
* 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
CVSS scores:
* CVE-2026-56857 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-56857 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-56866 ( SUSE ): 8.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
* CVE-2026-56866 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-78659 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-78659 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-78660 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-78660 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-78663 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-78663 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
* CVE-2026-78667 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-78667 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-78669 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-78669 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-94439 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-94439 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-94440 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-94440 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-94444 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
* CVE-2026-94447 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
* CVE-2026-94448 ( SUSE ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-97030 ( SUSE ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-97031 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-97031 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-97032 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
* Development Tools Module 15-SP7
* SUSE Linux Enterprise Desktop 15 SP7
* SUSE Linux Enterprise High Performance Computing 15 SP4
* SUSE Linux Enterprise High Performance Computing 15 SP5
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
* SUSE Linux Enterprise Real Time 15 SP7
* SUSE Linux Enterprise Server 15 SP4
* SUSE Linux Enterprise Server 15 SP4 LTSS
* SUSE Linux Enterprise Server 15 SP5
* SUSE Linux Enterprise Server 15 SP5 LTSS
* SUSE Linux Enterprise Server 15 SP6
* SUSE Linux Enterprise Server 15 SP6 LTSS
* SUSE Linux Enterprise Server 15 SP7
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
* SUSE Linux Enterprise Server for SAP Applications 15 SP7
An update that solves 15 vulnerabilities and has one security fix can now be
installed.
## Description:
This update for go1.27 fixes the following issues:
Update to go1.27.2 (bsc#1272545):
* 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).
Changes:
* go1.27.2 (released 2026-10-08) includes security fixes to the go command,
and the crypto/tls, html/template, net/http, net/textproto, and os packages,
as well as bug fixes to the compiler, the linker, the runtime, the cover
tool, the go fix command, vet, and the compress/flate, crypto/mlkem,
encoding/json, encoding/json/v2, net/http, and os packages.
* go#81084 encoding/json: Unmarshal leaves +/-Inf in the destination on float
overflow in Go 1.27
* go#81145 runtime: mutex profiling can deadlock Windows asynchronous
preemption during GC
* go#81226 runtime: netpoll: eventfd ready for something unexpected
* go#81229 encoding/json: json.UnsupportedValueError returns an Invalid Value
instead of a Float value
* go#81233 compress/flate: Writer with a preset dictionary emits the
dictionary into the output stream
* go#81252 lib/fips140: fix ML-KEM CAST and re-seal v1.26.0
* go#81296 cmd/compile: internal compiler error: MoveLoop too small
* go#81306 cmd/compile: go1.27.0 unified export data loses method order,
breaking objectpath, crashing staticcheck
* go#81324 plugin: loading multiple plugins corrupts stdlib types in Go 1.27
* go#81353 runtime: Go 1.27.0: SIGSEGV crash with generic function + pointer
type parameter + embedded interface
* go#81362 encoding/json: Marshal now honors MarshalText for string-kind map
keys
* go#81374 os,internal/poll: NewFile on an inherited overlapped stdout pipe
hangs a sibling's WriteFile (Windows)
* go#81389 cmd/fix, x/tools/go/analysis/passes/modernize: errorsastype
rewrites errors.As target interface that does not implement error
* go#81402 os: go 1.25.x regression on RemoveAll for oldest Windows 10 build
10240
* go#81411 net/http: concurrent response body Read and Close can deadlock with
automatic draining in Go 1.27
* go#81437 runtime: intermittent SIGBUS (unaligned access) in netpoll on
mips64le (Go 1.27)
* go#81469 runtime: ios/arm64 binaries executed outside an app bundle change
working directory on startup
* go#81515 net/http: readLoop reads Response.ContentLength after Body.Close
returns
* go#81516 net/http: Response.Body.Close returns the earlier Read error after
a non-EOF Read failure
* go#81522 net/http: Response.Trailer race due to response body draining
* go#81580 testing: go test -v doubles ESC (0x1b) in t.Log output since Go
1.27, corrupting ANSI colors in some terminals
* go#81666 cmd/compile: Embedded interfaces using tail calls cause race
detector stack growth
* go#81667 cmd/compile: go1.27 miscompiles &slice[i].Field on an append-built
slice; returned pointer aliases reused memory
* go#81706 cmd/compile: ICE on 386 when inlining nested bit rotations (Int64Lo
not lowered)
* go#81816 net/http: Request.TLS is not properly populated for HTTP/2 requests
* go#81818 cmd/internal/obj/ppc64: async preemption bug in BR (CTR)
* go#81829 runtime: windows/amd64 stack corruption when LockOSThread wraps
registry calls (new in Go 1.27)
* go#81832 cmd/cover: NumStmt duplicated across split blocks, inflating
statement coverage
* go#81861 cmd/go: vet reports no diagnostics for a package that an earlier
run vetted as a dependency
* go#81890 cmd/link: plugin.Open fails on macOS 27: LC_DYLD_CHAINED_FIXUPS
seg_count not updated after combining DWARF
## Patch Instructions:
To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4625
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4625
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4625
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4625
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4625
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4625
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-4625
* SUSE Linux Enterprise Server 15 SP4 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4625
* Development Tools Module 15-SP7
zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP7-2026-4625
* SUSE Linux Enterprise Server 15 SP5 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4625
* SUSE Linux Enterprise Server 15 SP6 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-4625
## Package List:
* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* Development Tools Module 15-SP7 (aarch64 ppc64le s390x x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
* SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
* go1.27-doc-1.27.2-150000.1.12.1
* go1.27-1.27.2-150000.1.12.1
* go1.27-race-1.27.2-150000.1.12.1
## References:
* https://www.suse.com/security/cve/CVE-2026-56857.html
* https://www.suse.com/security/cve/CVE-2026-56866.html
* https://www.suse.com/security/cve/CVE-2026-78659.html
* https://www.suse.com/security/cve/CVE-2026-78660.html
* https://www.suse.com/security/cve/CVE-2026-78663.html
* https://www.suse.com/security/cve/CVE-2026-78667.html
* https://www.suse.com/security/cve/CVE-2026-78669.html
* https://www.suse.com/security/cve/CVE-2026-94439.html
* https://www.suse.com/security/cve/CVE-2026-94440.html
* https://www.suse.com/security/cve/CVE-2026-94444.html
* https://www.suse.com/security/cve/CVE-2026-94447.html
* https://www.suse.com/security/cve/CVE-2026-94448.html
* https://www.suse.com/security/cve/CVE-2026-97030.html
* https://www.suse.com/security/cve/CVE-2026-97031.html
* https://www.suse.com/security/cve/CVE-2026-97032.html
* https://bugzilla.suse.com/show_bug.cgi?id=1272545
* https://bugzilla.suse.com/show_bug.cgi?id=1284766
* https://bugzilla.suse.com/show_bug.cgi?id=1284767
* https://bugzilla.suse.com/show_bug.cgi?id=1284768
* https://bugzilla.suse.com/show_bug.cgi?id=1284769
* https://bugzilla.suse.com/show_bug.cgi?id=1284770
* https://bugzilla.suse.com/show_bug.cgi?id=1284771
* https://bugzilla.suse.com/show_bug.cgi?id=1284772
* https://bugzilla.suse.com/show_bug.cgi?id=1284773
* https://bugzilla.suse.com/show_bug.cgi?id=1284774
* https://bugzilla.suse.com/show_bug.cgi?id=1284775
* https://bugzilla.suse.com/show_bug.cgi?id=1284776
* https://bugzilla.suse.com/show_bug.cgi?id=1284777
* https://bugzilla.suse.com/show_bug.cgi?id=1284778
* https://bugzilla.suse.com/show_bug.cgi?id=1284779
* https://bugzilla.suse.com/show_bug.cgi?id=1284780
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