Heap-based Buffer Overflow vulnerability in Apache ORC.
A vulnerability has been identified in the ORC C++ LZO decompression logic, where specially crafted malformed ORC files can cause the decompressor to allocate a 250-byte buffer but then attempts to copy 295 bytes into it. It causes memory corruption.
This issue affects Apache ORC C++ library: through 1.8.8, from 1.9.0 through 1.9.5, from 2.0.0 through 2.0.4, from 2.1.0 through 2.1.1.
Users are recommended to upgrade to version 1.8.9, 1.9.6, 2.0.5, and 2.1.2, which fix the issue.
{
"cwe_ids": [
"CWE-122"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47436.json",
"unresolved_ranges": [
{
"extracted_events": [
{
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{
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{
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{
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{
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{
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{
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"source": "AFFECTED_FIELD"
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{
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{
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{
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{
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{
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{
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{
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],
"source": "DESCRIPTION"
}
],
"cna_assigner": "apache"
}{
"cpe": "cpe:2.3:a:apache:orc:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
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{
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{
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],
"source": "CPE_RANGE"
}