SUSE-SU-2026:3799-1: important: Security update for go1.26-openssl
SLE-SECURITY-UPDATES
null at suse.de
Tue Aug 25 17:32:31 UTC 2026
# Security update for go1.26-openssl
Announcement ID: SUSE-SU-2026:3799-1
Release Date: 2026-08-25T12:45:14Z
Rating: important
References:
* bsc#1255111
* bsc#1266609
* bsc#1275024
* bsc#1275025
* bsc#1275026
* bsc#1275028
* bsc#1275029
* bsc#1275032
* bsc#1275033
* bsc#1275034
* jsc#SLE-18320
Cross-References:
* 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
CVSS scores:
* CVE-2026-33818 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-33818 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-39821 ( SUSE ): 9.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-39821 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-39821 ( NVD ): 8.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
* CVE-2026-39821 ( NVD ): 9.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
* CVE-2026-56853 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56853 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56858 ( SUSE ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-56858 ( NVD ): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
* CVE-2026-56859 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56859 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56860 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-56860 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56862 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56862 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56864 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
* CVE-2026-56864 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-56865 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
* CVE-2026-56865 ( NVD ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products:
* 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 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 for SAP Applications 15 SP4
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
An update that solves nine vulnerabilities, contains one feature and has one
security fix can now be installed.
## Description:
This update for go1.26-openssl fixes the following issues:
Update to version 1.26.7 cut from the go1.25-fips-release at the revision tagged
go1.26.7-1-openssl-fips.
Security issues fixed:
* CVE-2026-33818: encoding/asn1: stack exhaustion when parsing deeply-nested,
recursive structures can lead to denial of service (bsc#1275034).
* CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only
Punycode-encoded labels allows for validation bypass and privilege
escalation (bsc#1266609).
* CVE-2026-56853: net/http: first header read timeout not being applied when a
server is configured to support unencrypted HTTP/2 allows for denial of
service (bsc#1275028).
* CVE-2026-56858: html/template: wrong JavaScript regexp context tracking
after top-level `{` can lead to XSS (bsc#1275033).
* CVE-2026-56859: encoding/xml: stack exhaustion due to recursion depth guard
bypass during decoding operations can lead to denial of service
(bsc#1275026).
* CVE-2026-56860: net/url: quadratic complexity in `resolvePath` when
processing backtrack path elements can lead to denial of service
(bsc#1275029).
* CVE-2026-56862: crypto/tls: handshake messages can bypass non-advancing
record limit in TLS 1.3, which can lead to a denial of service
(bsc#1275032).
* CVE-2026-56864: x/mod/sumdb: a malicious `GOSUMDB` is capable of serving
arbitrary module content not contained within the transparency log
(bsc#1275025).
* CVE-2026-56865: x/mod/sumdb/tlog: a malicious `GOPROXY` is capable of
forging sumdb tiles, which allows for bypass of the `GOSUMDB` check and
persistence of attacker-controlled module contents to a local Go module
cache (bsc#1275024).
Other updates and bugfixes:
* Update to version 1.26.7 cut from the go1.25-fips-release branch at the
revision tagged go1.26.7-1-openssl-fips: (jsc#SLE-18320).
* Rebase to 1.26.7
* Support `strictfipsruntime` with `no_openssl`
* Fix multiple `no_openssl` build tag issues
* go1.26.7 (released 2026-08-19, boo#1255111):
* go#80927 net/http: `ReadHeaderTimeout` remains active after unencrypted
`HTTP/2` handoff
* go1.26.6 (released 2026-08-13):
* includes security fixes to the `go` command, and the `crypto/tls`,
`encoding/asn1`, `encoding/xml`, `html/template`, `net`, `net/http`, and
`net/url` packages, as well as bug fixes to the compiler, the linker, the
runtime, and the `crypto/tls` and `os` packages.
* go#79876 cmd/compile: `prove` misscompilation in `slicemask` folding leaves
garbage in the upper bits
* go#80099 cmd/compile: internal compiler error invalid heap allocated var
without `Heapaddr`
* go#80131 cmd/link: `peCreateExportFile` generates invalid `.def` file when
output name has trailing dot (`c-shared` on Windows)
* go#80365 os: `Root`'s `MkdirAll` can't create paths ending in forward
slashes
* go#80367 os: `TestRootMultiReadFile` fails on `netbsd/arm64` after CL 797880
* go#80369 os: `TestRootConsistencyRemoveAll` fails on Plan 9 after CL 797880
* go#80394 runtime: `arm64` found pointer to free object with safe code
* go#80441 runtime: uninitialized register due to wrong ABI in
`mach_vm_region_trampoline` leads to `libc` following garbage stack data as
a pointer
* go#80478 cmd/compile: `riscv64` miscompiles struct copy, corrupting a
`[]byte` slice field
* go#80499 runtime: js/wasm: "found bad pointer in Go heap" \-- link-layout-
constant value recorded as a pointer in the write-barrier buffer
* go#80579 cmd/compile: `regalloc` uses unreliable type data (like
`v.Type.IsSigned()`) to choose the restore of spills
* go#80606 crypto/tls: escape hatch for FIPS 140-3 mode Extended Master Secret
enforcement
* go#80609 net, x/net/dns/dnsmessage: panic when parsing invalid `SVCB` record
* go#80615 cmd/compile: `mips64le` misscompile `OffPtr` by a const which
doesn't fit 32bits resulting in panic
* go#80617 cmd/compile: `mips`/`mips64`, multiply/divide results spilled from
`HI`/`LO` corrupted w/ big stack frames
* go#80619 cmd/compile: `prove` bug causes invalid indirect call
* go#80715 runtime: `fpTracebackPartialExpand` `SIGSEGV` under high panic load
* Update to version 1.26.5 cut from the go1.25-fips-release branch at the
revision tagged go1.26.5-2-openssl-fips:
* Limit `openssl` `RandReader` concurrency
## 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 High Performance Computing LTSS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-3799=1
* SUSE Linux Enterprise Server 15 SP5 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-3799=1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-3799=1
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-3799=1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3799=1
* SUSE Linux Enterprise Server 15 SP4 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3799=1
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-3799=1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-3799=1
## Package List:
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
* SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
* go1.26-openssl-race-1.26.7-150000.1.18.1
* go1.26-openssl-1.26.7-150000.1.18.1
* go1.26-openssl-doc-1.26.7-150000.1.18.1
## References:
* https://www.suse.com/security/cve/CVE-2026-33818.html
* https://www.suse.com/security/cve/CVE-2026-39821.html
* https://www.suse.com/security/cve/CVE-2026-56853.html
* https://www.suse.com/security/cve/CVE-2026-56858.html
* https://www.suse.com/security/cve/CVE-2026-56859.html
* https://www.suse.com/security/cve/CVE-2026-56860.html
* https://www.suse.com/security/cve/CVE-2026-56862.html
* https://www.suse.com/security/cve/CVE-2026-56864.html
* https://www.suse.com/security/cve/CVE-2026-56865.html
* https://bugzilla.suse.com/show_bug.cgi?id=1255111
* https://bugzilla.suse.com/show_bug.cgi?id=1266609
* https://bugzilla.suse.com/show_bug.cgi?id=1275024
* https://bugzilla.suse.com/show_bug.cgi?id=1275025
* https://bugzilla.suse.com/show_bug.cgi?id=1275026
* https://bugzilla.suse.com/show_bug.cgi?id=1275028
* https://bugzilla.suse.com/show_bug.cgi?id=1275029
* https://bugzilla.suse.com/show_bug.cgi?id=1275032
* https://bugzilla.suse.com/show_bug.cgi?id=1275033
* https://bugzilla.suse.com/show_bug.cgi?id=1275034
* https://jira.suse.com/browse/SLE-18320
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