CVE-2026-27143

NameCVE-2026-27143
DescriptionArithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
golang-1.15 (PTS)bullseye1.15.15-1~deb11u4vulnerable
golang-1.19 (PTS)bookworm1.19.8-2vulnerable
golang-1.24 (PTS)trixie1.24.4-1vulnerable
forky, sid1.24.13-2vulnerable
golang-1.25 (PTS)forky1.25.8-1vulnerable
sid1.25.9-1fixed
golang-1.26 (PTS)forky1.26.1-1vulnerable
sid1.26.2-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
golang-1.15source(unstable)(unfixed)
golang-1.19source(unstable)(unfixed)
golang-1.24source(unstable)(unfixed)
golang-1.25source(unstable)1.25.9-1
golang-1.26source(unstable)1.26.2-1

Notes

https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
https://github.com/golang/go/issues/78333
Fixed by: https://github.com/golang/go/commit/c4b4bd7b3aefeb67a541912df0733bde68333bfc (go1.26.2)
Fixed by: https://github.com/golang/go/commit/7d2dd3488cdfbddda14c18c455d3263df75a46fc (go1.25.9)

Search for package or bug name: Reporting problems