Bug 2406759 (CVE-2025-40077) - CVE-2025-40077 kernel: f2fs: fix to avoid overflow while left shift operation
Summary: CVE-2025-40077 kernel: f2fs: fix to avoid overflow while left shift operation
Keywords:
Status: NEW
Alias: CVE-2025-40077
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-28 12:03 UTC by OSIDB Bzimport
Modified: 2025-11-26 13:18 UTC (History)
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Description OSIDB Bzimport 2025-10-28 12:03:57 UTC 
In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix to avoid overflow while left shift operation

Should cast type of folio->index from pgoff_t to loff_t to avoid overflow
while left shift operation.
Comment 1 Jon Moroney 2025-10-28 18:26:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102819-CVE-2025-40077-2313@gregkh/T
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