Bug 2367592 (CVE-2025-37950)

Summary: CVE-2025-37950 kernel: ocfs2: fix panic in failed foilio allocation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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OS: Linux   
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Description OSIDB Bzimport 2025-05-20 17:02:22 UTC
In the Linux kernel, the following vulnerability has been resolved:

ocfs2: fix panic in failed foilio allocation

commit 7e119cff9d0a ("ocfs2: convert w_pages to w_folios") and commit
9a5e08652dc4b ("ocfs2: use an array of folios instead of an array of
pages") save -ENOMEM in the folio array upon allocation failure and call
the folio array free code.

The folio array free code expects either valid folio pointers or NULL. 
Finding the -ENOMEM will result in a panic.  Fix by NULLing the error
folio entry.

Comment 2 Avinash Hanwate 2025-05-21 06:04:51 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025052000-CVE-2025-37950-2a1f@gregkh/T