Bug 2313130 (CVE-2024-46781)

Summary: CVE-2024-46781 kernel: nilfs2: fix missing cleanup on rollforward recovery error
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2313251    
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Description OSIDB Bzimport 2024-09-18 08:22:53 UTC 
In the Linux kernel, the following vulnerability has been resolved:

nilfs2: fix missing cleanup on rollforward recovery error

In an error injection test of a routine for mount-time recovery, KASAN
found a use-after-free bug.

It turned out that if data recovery was performed using partial logs
created by dsync writes, but an error occurred before starting the log
writer to create a recovered checkpoint, the inodes whose data had been
recovered were left in the ns_dirty_files list of the nilfs object and
were not freed.

Fix this issue by cleaning up inodes that have read the recovery data if
the recovery routine fails midway before the log writer starts.
Comment 1 Michal Findra 2024-09-18 11:46:43 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024091850-CVE-2024-46781-377e@gregkh/T