CVE-2025-39697 (GCVE-0-2025-39697)
Vulnerability from cvelistv5
Published
2025-09-05 17:21
Modified
2025-11-03 17:42
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().
References
Impacted products
Vendor Product Version
Linux Linux Version: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a
Version: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a
Version: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a
Version: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a
Version: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a
Version: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a
Version: bd37d6fce184836bd5e7cd90ce40116a4fadaf2a
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}


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