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High ALAS2-2026-3259 9 CVEs

Important: golang security update (Amazon Linux 2)

Published Apr 27, 2026 · Updated Apr 29, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-32289: Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content. This could cause actions within JS template literals to be incorrectly escaped, leading to XSS vulnerabilities. CVE-2026-32288: tar.Reader can allocate an unbounded amount of memory when reading a maliciously-crafted archive containing a large number of sparse regions encoded in the old GNU sparse map format. CVE-2026-32283: If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3. CVE-2026-32282: On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. CVE-2026-32281: Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool. CVE-2026-32280: During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls. CVE-2026-27144: The Go compiler (cmd/compile) incorrectly handled no-op interface conversions, preventing correct determination about non-overlapping memory moves, potentially leading to memory corruption at runtime in programs compiled with affected Go versions. CVE-2026-27143: Arithmetic over induction variables in loops were not correctly checked for underflow or overflow in the Go compiler (cmd/compile). As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption in programs compiled with affected Go versions. CVE-2026-27140: SWIG file names containing 'cgo' and well-crafted payloads could lead to code smuggling and arbitrary code execution at build time in the Go toolchain (cmd/go) due to trust layer bypass.

Fixed packages 7

ReleasePackageFixed in
Amazon Linux · 2 golang 0:1.25.9-1.amzn2.0.1
Amazon Linux · 2 golang-bin 0:1.25.9-1.amzn2.0.1
Amazon Linux · 2 golang-docs 0:1.25.9-1.amzn2.0.1
Amazon Linux · 2 golang-misc 0:1.25.9-1.amzn2.0.1
Amazon Linux · 2 golang-shared 0:1.25.9-1.amzn2.0.1
Amazon Linux · 2 golang-src 0:1.25.9-1.amzn2.0.1
Amazon Linux · 2 golang-tests 0:1.25.9-1.amzn2.0.1

Vulnerabilities 9

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-27140.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-27143.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-27144.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-32280.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-32281.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-32282.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-32283.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-32288.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-32289.html