MediumFix available
ffmpeg — security advisory
A NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.
- Products
- ffmpeg
- Affected versions
- 7:3.3.4-2, 7:3.3.4-2build3, 7:3.4-2ubuntu2, 7:3.4-4, 7:3.4-4build1, 7:3.4.1-1, 7:3.4.1-1build1, 7:3.4.11-0ubuntu0.1, 7:3.4.11-0ubuntu0.1+esm1, 7:3.4.11-0ubuntu0.1+esm10, 7:3.4.11-0ubuntu0.1+esm2, 7:3.4.11-0ubuntu0.1+esm3, 7:3.4.11-0ubuntu0.1+esm4, 7:3.4.11-0ubuntu0.1+esm5, 7:3.4.11-0ubuntu0.1+esm6, 7:3.4.11-0ubuntu0.1+esm7, 7:3.4.11-0ubuntu0.1+esm8, 7:3.4.11-0ubuntu0.1+esm9, 7:3.4.2-1, 7:3.4.2-1build1, 7:3.4.2-2, 7:3.4.4-0ubuntu0.18.04.1, 7:3.4.6-0ubuntu0.18.04.1, 7:3.4.8-0ubuntu0.2, 7:4.1.4-1build2, 7:4.2.1-2, 7:4.2.1-2ubuntu1, 7:4.2.2-1build1, 7:4.2.2-1ubuntu1, 7:4.2.4-1ubuntu0.1, 7:4.2.4-1ubuntu0.1+esm1, 7:4.2.7-0ubuntu0.1, 7:4.2.7-0ubuntu0.1+esm1, 7:4.2.7-0ubuntu0.1+esm10, 7:4.2.7-0ubuntu0.1+esm2, 7:4.2.7-0ubuntu0.1+esm3, 7:4.2.7-0ubuntu0.1+esm4, 7:4.2.7-0ubuntu0.1+esm5, 7:4.2.7-0ubuntu0.1+esm6, 7:4.2.7-0ubuntu0.1+esm7, 7:4.2.7-0ubuntu0.1+esm8, 7:4.2.7-0ubuntu0.1+esm9, 7:4.4-6ubuntu5, 7:4.4.1-2ubuntu1, 7:4.4.1-3ubuntu1, 7:4.4.1-3ubuntu2, 7:4.4.1-3ubuntu3, 7:4.4.1-3ubuntu5, 7:4.4.2-0ubuntu0.22.04.1, 7:4.4.2-0ubuntu0.22.04.1+esm1, 7:4.4.2-0ubuntu0.22.04.1+esm2, 7:4.4.2-0ubuntu0.22.04.1+esm3, 7:4.4.2-0ubuntu0.22.04.1+esm4, 7:4.4.2-0ubuntu0.22.04.1+esm5, 7:4.4.2-0ubuntu0.22.04.1+esm6, 7:4.4.2-0ubuntu0.22.04.1+esm7, 7:4.4.2-0ubuntu0.22.04.1+esm8, 7:4.4.2-0ubuntu0.22.04.1+esm9, 7:6.0-6ubuntu1, 7:6.0-9ubuntu1, 7:6.1-2ubuntu1, 7:6.1-3ubuntu1, 7:6.1-4ubuntu1, 7:6.1-5ubuntu1, 7:6.1.1-1ubuntu1, 7:6.1.1-3ubuntu1, 7:6.1.1-3ubuntu5, 7:6.1.1-3ubuntu5+esm1, 7:6.1.1-3ubuntu5+esm2, 7:6.1.1-3ubuntu5+esm3, 7:6.1.1-3ubuntu5+esm4, 7:6.1.1-3ubuntu5+esm5, 7:7.1.1-1ubuntu1, 7:7.1.1-1ubuntu2, 7:7.1.1-1ubuntu3, 7:7.1.1-1ubuntu4, 7:7.1.1-1ubuntu4.1, 7:7.1.1-1ubuntu4.2, 7:8.0.1-3ubuntu2, 7:8.1-3ubuntu3, 7:8.1.2-2ubuntu2
- Fixed versions
- 7:3.4.11-0ubuntu0.1+esm11, 7:4.2.7-0ubuntu0.1+esm11, 7:4.4.2-0ubuntu0.22.04.1+esm10, 7:6.1.1-3ubuntu5+esm6
- CVEs
- CVE-2025-10256
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:24 UTC · Revision 1
Source evidence
A NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.
osv:UBUNTU-CVE-2025-10256
ffmpeg
Fixed versions: 7:3.4.11-0ubuntu0.1+esm11
ffmpeg
Fixed versions: 7:4.2.7-0ubuntu0.1+esm11
ffmpeg
Fixed versions: 7:4.4.2-0ubuntu0.22.04.1+esm10
ffmpeg
Fixed versions: 7:6.1.1-3ubuntu5+esm6
ffmpeg
Fixed versions: Not specified
ffmpeg
Fixed versions: Not specified
Complete source record
{
"id": "7365678c2f7ed9149568c17646a8f9fccb6aee852f0c156064e19a5dad2cb29b",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-10256",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-10256",
"summary": "A NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.",
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"metrics": [
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"database_specific": {
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},
"ecosystem_specific": {
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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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],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
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}
],
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"7:4.2.7-0ubuntu0.1+esm2",
"7:4.2.7-0ubuntu0.1+esm3",
"7:4.2.7-0ubuntu0.1+esm4",
"7:4.2.7-0ubuntu0.1+esm5",
"7:4.2.7-0ubuntu0.1+esm6",
"7:4.2.7-0ubuntu0.1+esm7",
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"7:4.2.7-0ubuntu0.1+esm9",
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],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
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},
{
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},
{
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},
{
"binary_name": "libavcodec58",
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},
{
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},
{
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},
{
"binary_name": "libavfilter-extra7",
"binary_version": "7:4.2.7-0ubuntu0.1+esm11"
},
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],
"modified": "2026-10-17T12:56:47.464101411Z",
"provider": "osv",
"upstream": [
"CVE-2025-10256"
],
"references": [
"https://ubuntu.com/security/CVE-2025-10256",
"https://www.cve.org/CVERecord?id=CVE-2025-10256",
"https://ubuntu.com/security/notices/USN-7830-1"
]
},
"related_cves": [
{
"value": "CVE-2025-10256",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 356279,
"published_at": "2025-09-16T00:00:00+00:00"
}