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ext4: reject mount if bigalloc with s_first_data_block != 0

🗓️ 23 Apr 2026 08:08:10Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com

Ext4 rejects mount when bigalloc is enabled and s_first_data_block is not zero.

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29 Apr 2026 21:43Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.15.5 - 7.8
EPSS0.00014
0