Bug 2334502 (CVE-2024-56626)

Summary: CVE-2024-56626 kernel: ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: high    
Version: unspecifiedCC: dfreiber, drow, jburrell, oarribas, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2024-12-27 15:06:13 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write

An offset from client could be a negative value, It could allows
to write data outside the bounds of the allocated buffer.
Note that this issue is coming when setting
'vfs objects = streams_xattr parameter' in ksmbd.conf.
Comment 1 Avinash Hanwate 2024-12-28 05:06:21 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024122712-CVE-2024-56626-f2f9@gregkh/T