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CVE-2025-39825

smb: client: fix race with concurrent opens in rename(2) PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 78c09634f7dc061a3bd09704cdbebb3762a45cdf before c9e7de284da0be5b44dbe79d71573f9f7f9b144c; affected 78c09634f7dc061a3bd09704cdbebb3762a45cdf before 24b9ed739c8c5b464d983e12cf308982f3ae93c2; affected 78c09634f7dc061a3bd09704cdbebb3762a45cdf before c9991af5e09924f6f3b3e6996a5e09f9504b4358; affected 78c09634f7dc061a3bd09704cdbebb3762a45cdf before 289f945acb20b9b54fe4d13895e44aa58965ddb2; affected 78c09634f7dc061a3bd09704cdbebb3762a45cdf before d84291fc7453df7881a970716f8256273aca5747
Linux / Linuxaffected 5.13; unaffected 0 before 5.13; unaffected 6.1.150 through 6.1.*; unaffected 6.6.104 through 6.6.*; unaffected 6.12.45 through 6.12.*; unaffected 6.16.5 through 6.16.*; unaffected 6.17 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

siemens-SADP

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.