6.2
Moyenne
CVE-2026-43894 jq is a command-line JSON processor
Description
jq is a command-line JSON processor. In 1.8.1 and earlier, when decNumberFromString is given a number literal of INT_MAX-1 (2147483646) digits, the D2U() macro overflows during signed-int arithmetic. The wrapped negative value bypasses the heap-allocation size check, causes the function to use a 30-byte stack buffer, and then writes ≈715 million 16-bit units (≈1.4 GiB) at an offset 1.43 GiB below the stack frame. The written content is fully attacker-controlled (the parsed decimal digits, packed 3-per-unit).
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| jq 1.8 | premières → 1.8.1 | Pas de correctif indiqué |
Références
- github.com github.com
Chronologie
- Publiée
- Dernière modification