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.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2 Patch
- https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2 Patch
- https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358 Patch
- https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c Patch
- https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 4.7 · linux, debianNVD modified 2026-10-19 21:10
Affected (CPE criteria) 3
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References 7
- https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2 Patch
- https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2 Patch
- https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358 Patch
- https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c Patch
- https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html