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CVE-2026-97037

Linker script injection via split -Wl, flags and Darwin or symbol linker flags in cgo in cmd/go

Products / packages Go toolchain cmd/go · toolchain

Published

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Severity and exploitation

Not in CISA KEVNo CVSS score

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 20:55:32 UTC

Severity

unknown

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Package fixes recorded

Fix versions are recorded for 1 of 1 mapped packages. Check each release branch and any separate product guidance.

What this means

Building a malicious package that uses cgo could cause arbitrary code execution at link time by passing linker script files to the host linker via "cgo LDFLAGS".

Source excerpt · OSV

Attack conditions

The go command now requires a "-Wl," prefix on the second token of split "-Wl," flags (except "-Wl,-R"), verifies that these flags do not reference linker script files, and disallows bare "-Wl,--warn-backrefs-exclude".

Excerpt from the original source description below.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Go toolchain · Go

cmd/go

2 ranges
Go version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 1.26.11

semver versions

1.27.0-0 → before 1.27.4

semver versions

unaffected

unknown

Other versions: unaffected

Packages

Compare each installed version with the publisher’s affected ranges. Where a fix is recorded, choose the appropriate release branch and test compatibility before upgrading.

toolchain Go
Affected range Recorded fix
Earlier releases before 1.26.11Semantic versions1.26.11
From 1.27.0-0 before 1.27.4Semantic versions1.27.4

Version evidence: OSV · GO-2026-6854

View original version evidence (0 explicit versions)

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

Use the recorded fix for your release branch. Review the publisher’s instructions and test compatibility before upgrading.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

Building a malicious package that uses cgo could cause arbitrary code execution at link time by passing linker script files to the host linker via "#cgo LDFLAGS".

Split "-Wl," flags that consume a following argument (such as "-Wl,-rpath", "-Wl,--just-symbols", and "-Wl,-undefined") previously accepted a bare second argument without a "-Wl," prefix, which the compiler driver passes directly to the linker as a positional input file. Additionally, when using GNU ld.bfd, flags such as "-framework", "-Wl,-framework", "-Wl,-undefined", "-Wl,--just-symbols", "-Wl,-R", "-Wl,-subsystem", and (on non-Darwin platforms) "-Wl,-sectcreate" could cause ld.bfd to interpret their arguments as linker scripts if they named a regular file on disk.

The go command now requires a "-Wl," prefix on the second token of split "-Wl," flags (except "-Wl,-R"), verifies that these flags do not reference linker script files, and disallows bare "-Wl,--warn-backrefs-exclude".

References

4 sources
go.dev/cl/862150
Source referenceGo
go.dev/issue/82573
Source referenceGo
groups.google.com/g/golang-announce/c/iY8TY0wWgbM
Source referenceGo
pkg.go.dev/vuln/GO-2026-6854
Security advisoryGo

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance · not supplied
Weakness classification · not supplied
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-97037

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →
Contributing organizations · 1
Go

Assigning organization

2026-11-11

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

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