Описание
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).
A flaw was found in jq, a tool used for processing JSON data from the command line. A remote attacker can exploit a vulnerability by providing a specially crafted large number as input. This can cause an internal calculation error, leading to a memory overflow where the attacker can write their own data into the system's memory, potentially resulting in the application crashing (Denial of Service).
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Ansible Automation Platform 2 | ansible-automation-platform-26/controller-rhel9 | Fix deferred | ||
| Red Hat Ansible Automation Platform 2 | ansible-automation-platform-26/hub-rhel9 | Fix deferred | ||
| Red Hat Ansible Automation Platform 2 | automation-controller | Out of support scope | ||
| Red Hat Ceph Storage 4 | jq | Out of support scope | ||
| Red Hat Enterprise Linux 10 | jq | Fix deferred | ||
| Red Hat Enterprise Linux 8 | jq | Fix deferred | ||
| Red Hat Enterprise Linux 9 | jq | Out of support scope | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Fix deferred | ||
| Red Hat Hardened Images | jq-main-1.8.2-0.1.hum1 | Fixed | RHSA-2026:29986 | 25.06.2026 |
Показывать по
Дополнительная информация
Статус:
6.2 Medium
CVSS3
Связанные уязвимости
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).
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).
jq: Wild stack write via signed-integer overflow in decNumber D2U() macro
jq is a command-line JSON processor. In 1.8.1 and earlier, when decNum ...
Уязвимость функции decNumberFromString() утилиты для обработки JSON-файлов jq, позволяющая нарушителю вызвать отказ в обслуживании
6.2 Medium
CVSS3