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Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding I/O to complete as well as marking all existing open handles as deleted to prevent them from deferring closes, which increases the race window for potential concurrent opens on the target file. Fix this by unhashing the dentry in advance to prevent any concurrent opens on the target.

PUBLISHED Reserved 2025-04-16 | Published 2025-09-16 | Updated 2025-09-29 | Assigner Linux

Product status

Default status
unaffected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before c9e7de284da0be5b44dbe79d71573f9f7f9b144c
affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 24b9ed739c8c5b464d983e12cf308982f3ae93c2
affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before c9991af5e09924f6f3b3e6996a5e09f9504b4358
affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 289f945acb20b9b54fe4d13895e44aa58965ddb2
affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before d84291fc7453df7881a970716f8256273aca5747
affected

Default status
affected

6.1.150 (semver)
unaffected

6.6.104 (semver)
unaffected

6.12.45 (semver)
unaffected

6.16.5 (semver)
unaffected

6.17 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c

git.kernel.org/...c/24b9ed739c8c5b464d983e12cf308982f3ae93c2

git.kernel.org/...c/c9991af5e09924f6f3b3e6996a5e09f9504b4358

git.kernel.org/...c/289f945acb20b9b54fe4d13895e44aa58965ddb2

git.kernel.org/...c/d84291fc7453df7881a970716f8256273aca5747

cve.org (CVE-2025-39825)

nvd.nist.gov (CVE-2025-39825)

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