Bug 2460661 (CVE-2026-31447) - CVE-2026-31447 kernel: ext4: reject mount if bigalloc with s_first_data_block != 0
Summary: CVE-2026-31447 kernel: ext4: reject mount if bigalloc with s_first_data_block...
Keywords:
Status: NEW
Alias: CVE-2026-31447
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-22 15:03 UTC by OSIDB Bzimport
Modified: 2026-04-22 17:23 UTC (History)
0 users

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Description OSIDB Bzimport 2026-04-22 15:03:50 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ext4: reject mount if bigalloc with s_first_data_block != 0

bigalloc with s_first_data_block != 0 is not supported, reject mounting
it.
Comment 1 Keith Grant 2026-04-22 17:22:34 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042246-CVE-2026-31447-ed33@gregkh/T
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