BIT-golang-2026-27143

vendorUSosv

Missing bound checks can lead to memory corruption in safe Go in cmd/compile

view advisory published 2026-04-18Licence: per source

Arithmetic 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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-27143US	critical9.8	0.54% (45th)	—	2026-04-08
Arithmetic 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, p…

references

External citations — patches, advisories, analysis.

https://go.dev/cl/763765FIX
https://go.dev/issue/78333REPORT
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWUDISCUSSION
https://nvd.nist.gov/vuln/detail/CVE-2026-27143WEB
https://pkg.go.dev/vuln/GO-2026-4868ADVISORY

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