Bug 2395328 (CVE-2022-50328)

Summary: CVE-2022-50328 kernel: jbd2: fix potential use-after-free in jbd2_fc_wait_bufs
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-09-15 15:07:46 UTC 
In the Linux kernel, the following vulnerability has been resolved:

jbd2: fix potential use-after-free in jbd2_fc_wait_bufs

In 'jbd2_fc_wait_bufs' use 'bh' after put buffer head reference count
which may lead to use-after-free.
So judge buffer if uptodate before put buffer head reference count.
Comment 1 Jon Moroney 2025-09-15 21:40:05 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091554-CVE-2022-50328-f996@gregkh/T