Bug 2535142 (CVE-2026-89838) - CVE-2026-89838 kernel: f2fs: limit recovery filename logging to stored length
Summary: CVE-2026-89838 kernel: f2fs: limit recovery filename logging to stored length
Keywords:
Status: NEW
Alias: CVE-2026-89838
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 10:58 UTC by OSIDB Bzimport
Modified: 2026-11-04 18:55 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-09-16 10:58:27 UTC
In the Linux kernel, the following vulnerability has been resolved:

f2fs: limit recovery filename logging to stored length

F2FS stores recovery filenames as a length plus a fixed-size i_name
buffer.  The buffer is not NUL-terminated, but recover_inode() and
recover_dentry() print it with %s.

For a 255-byte filename, recovery logging can read past i_name into the
following raw inode fields.

Print the name with a precision bounded by i_namelen and F2FS_NAME_LEN.


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