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    SUSE: 2020:2776-1 moderate: go1.15

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    An update that solves one vulnerability, contains one feature and has two fixes is now available.
       SUSE Security Update: Security update for go1.15
    Announcement ID:    SUSE-SU-2020:2776-1
    Rating:             moderate
    References:         #1170826 #1175132 #1176031 ECO-1484 
    Cross-References:   CVE-2020-24553
    Affected Products:
                        SUSE Linux Enterprise Module for Development Tools 15-SP2
                        SUSE Linux Enterprise Module for Development Tools 15-SP1
       An update that solves one vulnerability, contains one
       feature and has two fixes is now available.
       go1.15 (released 2020-08-11) Go 1.15 is a major release of Go.
       go1.15.x minor releases will be provided through August 2021.
       Most changes are in the implementation of the toolchain, runtime, and
       libraries. As always, the release maintains the Go 1 promise
       of compatibility. We expect almost all Go programs to continue to compile
        and run as before.
       * See release notes Excerpts relevant to
         OBS environment and for SUSE/openSUSE follow:
       * Module support in the go command is ready for production use, and we
         encourage all users to migrate to Go modules for dependency management.
       * Module cache: The location of the module cache may now be set with the
         GOMODCACHE environment variable. The default value of GOMODCACHE is
         GOPATH[0]/pkg/mod, the location of the module cache before this change.
       * Compiler flag parsing: Various flag parsing issues in go test and go vet
         have been fixed. Notably, flags specified in GOFLAGS are handled more
         consistently, and the -outputdir flag now interprets relative paths
         relative to the working directory of the go command (rather than the
         working directory
         of each individual test).
       * The GOPROXY environment variable now supports skipping proxies that
         return errors. Proxy URLs may now be separated with either commas (,) or
         pipe characters (|). If a proxy URL is followed by a comma, the go
         command will only try the next proxy in the list after a 404 or 410 HTTP
         response. If a proxy URL is followed by a pipe character, the go command
         will try the next proxy in the list after any error. Note that the
         default value of GOPROXY remains,direct, which
         does not fall back to direct in case of errors.
       * On a Unix system, if the kill command or kill system call is used to
         send a SIGSEGV, SIGBUS, or SIGFPE signal to a Go program, and if the
         signal is not being handled via
         os/signal.Notify, the Go program will now reliably crash with a stack
          trace. In earlier releases the behavior was unpredictable.
       * Allocation of small objects now performs much better at high core
         counts, and has lower worst-case latency.
       * Go 1.15 reduces typical binary sizes by around 5% compared to Go 1.14 by
         eliminating certain types of GC metadata and more aggressively
         eliminating unused type metadata.
       * The toolchain now mitigates Intel CPU erratum SKX102 on GOARCH=amd64 by
         aligning functions to 32 byte boundaries and padding jump instructions.
         While this padding increases binary sizes, this is more than made up for
         by the binary size improvements mentioned above.
       * Go 1.15 adds a -spectre flag to both the compiler and the assembler, to
         allow enabling Spectre mitigations. These should almost never be needed
         and are provided mainly as a "defense in depth" mechanism. See the
         Spectre Go wiki page for details.
       * The compiler now rejects //go: compiler directives that have no meaning
         for the declaration they are applied to with a "misplaced compiler
         directive" error. Such misapplied directives were broken before, but
         were silently ignored by the compiler.
       * Substantial improvements to the Go linker, which reduce linker resource
         usage (both time and memory) and improve code
         robustness/maintainability. Linking is 20% faster and requires 30% less
         memory on average. These changes are part of a multi-release project to
         modernize the Go linker, meaning that there will be additional linker
         improvements expected in future releases.
       * The linker now defaults to internal linking mode for
         -buildmode=pie on linux/amd64 and linux/arm64, so these configurations
          no longer require a C linker.
       * There has been progress in improving the stability and performance of
         the 64-bit RISC-V port on Linux (GOOS=linux, GOARCH=riscv64). It also
         now supports asynchronous preemption.
       * crypto/x509: The deprecated, legacy behavior of treating the CommonName
         field on X.509 certificates as a host name when no Subject Alternative
         Names are present is now disabled by default. It can be temporarily
         re-enabled by adding the value x509ignoreCN=0 to the GODEBUG environment
         variable. Note that if the CommonName is an invalid host name, it's
         always ignored, regardless of GODEBUG settings. Invalid names include
         those with any characters other than letters, digits, hyphens and
         underscores, and those with empty labels or trailing dots.
       * crypto/x509: go1.15 applications with an AWS DB instance that was
         created or updated to the rds-ca-2019 certificate prior to July 28,
         2020, you must update the certificate again. If you created your DB
         instance or updated its certificate after July 28, 2020, no action is
         required. For more information, see go#39568
       This update ships go1.15.2 (released 2020-09-09) includes fixes to the
       compiler, runtime, documentation, the go command, and the net/mail, os,
       sync, and testing packages.
       * go#41193 net/http/fcgi: race detected during execution of
         TestResponseWriterSniffsContentType test
       * go#41178 doc: include fix for #34437 in Go 1.14 release notes
       * go#41034 testing: Cleanup races with Logf and Errorf
       * go#41011 sync: sync.Map keys will never be garbage collected
       * go#40934 runtime: checkptr incorrectly -race flagging when using &^
       * go#40900 internal/poll: CopyFileRange returns EPERM on CircleCI Docker
         Host running 4.10.0-40-generic
       * go#40868 cmd/compile: R12 can be clobbered for write barrier call on
       * go#40849 testing: "=== PAUSE" lines do not change the test name for the
         next log line
       * go#40845 runtime: Panic if newstack at runtime.acquireLockRank
       * go#40805 cmd/test2json: tests that panic are marked as passing
       * go#40804 net/mail: change in behavior of ParseAddressList("") in 1.15
       * go#40802 cmd/go: in 1.15: change in "go test" argument parsing
       * go#40798 cmd/compile: inline marker targets not reachable after assembly
         on arm
       * go#40772 cmd/compile: compiler crashes in ssa: isNonNegative bad type
       * go#40767 cmd/compile: inline marker targets not reachable after assembly
         on ppc64x
       * go#40739 internal/poll: CopyFileRange returns ENOTSUP on Linux 3.10.0
         kernel on NFS mount
       * go#40412 runtime: Windows service lifecycle events behave incorrectly
         when called within a golang environment
       go1.15.1 (released 2020-09-01) includes security fixes to the net/http/cgi
       and net/http/fcgi packages.
       * bsc#1176031 CVE-2020-24553: go net/http/cgi,net/http/fcgi: Cross-Site
         Scripting (XSS) when Content-Type is not specified
       * go#41165 net/http/cgi,net/http/fcgi: Cross-Site Scripting (XSS) when
         Content-Type is not specified
    Patch Instructions:
       To install this SUSE Security 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 Module for Development Tools 15-SP2:
          zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP2-2020-2776=1
       - SUSE Linux Enterprise Module for Development Tools 15-SP1:
          zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP1-2020-2776=1
    Package List:
       - SUSE Linux Enterprise Module for Development Tools 15-SP2 (aarch64 ppc64le s390x x86_64):
       - SUSE Linux Enterprise Module for Development Tools 15-SP1 (aarch64 ppc64le s390x x86_64):
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