{"id":"CVE-2026-33984","summary":"FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write","details":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry-\u003esize is updated to vBarEntry-\u003ecount before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count \u003c= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.","aliases":["GHSA-8469-2xcx-frf6"],"modified":"2026-04-21T10:59:12.561002807Z","published":"2026-03-30T21:42:57.090Z","related":["ALSA-2026:8457","ALSA-2026:8458","ALSA-2026:8945"],"database_specific":{"cwe_ids":["CWE-122","CWE-131"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33984.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33984.json"},{"type":"FIX","url":"https://github.com/FreeRDP/FreeRDP/commit/dc7fdb165095139be779a4000199bc1706b06ad5"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8469-2xcx-frf6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33984"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"0"},{"fixed":"3028b706908f81767d9b9c744a90778c28f57d61"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"3.24.2"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33984.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}