fix: fix CVE-2026-2921 RIFF palette integer overflow vulnerability#6
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Zeno-sole wants to merge 1 commit intodeepin-community:masterfrom
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fix: fix CVE-2026-2921 RIFF palette integer overflow vulnerability#6Zeno-sole wants to merge 1 commit intodeepin-community:masterfrom
Zeno-sole wants to merge 1 commit intodeepin-community:masterfrom
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Add proper validation for palette data size in RIFF media handling. The vulnerability exists because num_colors * 4 could overflow and result in out-of-bounds reads/writes when processing AVI palette data. Use g_size_checked_mul() to check for integer overflow before comparing palette buffer size against expected size. This fixes: - GST-SA-2026-0004 - ZDI-CAN-28854 - CVE-2026-2921 Log: Fix CVE-2026-2921 RIFF palette integer overflow vulnerability Influence: 1. Verify AVI files with palette data are processed correctly 2. Test malformed AVI files with oversized palette values 3. Ensure no regression on normal AVI playback 4. Check security boundary is properly enforced fix: 修复 CVE-2026-2921 RIFF 调色板整数溢出漏洞 在 RIFF 媒体处理中添加调色板数据大小的正确验证。 该漏洞存在是因为 num_colors * 4 可能溢出，导致处理 AVI 调色板数据时 出现越界读写。 使用 g_size_checked_mul() 在比较调色板缓冲区大小与预期大小之前 检查整数溢出。 修复了： - GST-SA-2026-0004 - ZDI-CAN-28854 - CVE-2026-2921 Log: 修复 CVE-2026-2921 RIFF 调色板整数溢出漏洞 Influence: 1. 验证带有调色板数据的 AVI 文件能正确处理 2. 测试带有超大调色板值的畸形 AVI 文件 3. 确保正常 AVI 播放没有回归 4. 检查安全边界是否被正确执行 repo: gst-plugins-base1.0 #master
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Add proper validation for palette data size in RIFF media handling. The vulnerability exists because num_colors * 4 could overflow and result in out-of-bounds reads/writes when processing AVI palette data.
Use g_size_checked_mul() to check for integer overflow before comparing palette buffer size against expected size.
This fixes:
Log: Fix CVE-2026-2921 RIFF palette integer overflow vulnerability
Influence:
fix: 修复 CVE-2026-2921 RIFF 调色板整数溢出漏洞
在 RIFF 媒体处理中添加调色板数据大小的正确验证。
该漏洞存在是因为 num_colors * 4 可能溢出，导致处理 AVI 调色板数据时
出现越界读写。
使用 g_size_checked_mul() 在比较调色板缓冲区大小与预期大小之前
检查整数溢出。
修复了：
Log: 修复 CVE-2026-2921 RIFF 调色板整数溢出漏洞
Influence:
repo: gst-plugins-base1.0 #master