High [CVE-2026-87933] Memory corruption via use after free in cJSONUtils_MergePatch
This high-severity Red Hat Linux advisory covers CVE-2026-87933.
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Summary
A flaw was found in DaveGamble cJSON. The `cJSONUtils_MergePatch` function in `cJSON_Utils.c` is vulnerable to a use-after-free error.
A remote attacker could exploit this memory corruption vulnerability, potentially leading to information disclosure, data corruption, or denial of service. Red Hat severity: Important — CVSS 8.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L).
Weakness: CWE-825. Under investigation: Red Hat Enterprise Linux 8; Red Hat OpenShift Container Platform 4; Red Hat Satellite 6.
Red Hat lists Red Hat Hardened Images as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
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