Affected: Go standard library crypto/internal/nistec

Due to the usage of a variable time instruction in the assembly implementation of an internal function, a small number of bits of secret scalars are leaked on the ppc64le architecture. Due to the way this function is used, we do not believe this leakage is enough to allow recovery of the private key when P-256 is used in any well known protocols.

Affected: Ubuntu:22.04:LTS: golang-1.22, Ubuntu:24.04:LTS: golang-1.22

Kyle Seely discovered that the Go net/http module did not properly handle sensitive headers during repeated redirects. An attacker could possibly use this issue to obtain sensitive information. (CVE-2024-45336)

Juho Forsén discovered that the Go crypto/x509 module incorrectly handled IPv6 addresses during URI parsing. An attacker could possibly use this issue to bypass certificate URI constraints. (CVE-2024-45341)

It was discovered that the Go crypto module did not properly handle variable time instructions under certain circumstances on 64-bit Power (ppc64el) systems. An attacker could possibly use this issue to expose sensitive information. (CVE-2025-22866)

It was discovered that the Go http/httpproxy module did not properly handle IPv6 zone IDs during hostname matching. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-22870)

Takeshi Kaneko discovered that the Go net/http module did not properly strip sensitive proxy headers during redirect requests. An attacker could possibly use this issue to obtain sensitive information. (CVE-2025-4673)