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CVE-2025-40328 smb: client: fix potential UAF in smb2_close_cached_fid()

🗓️ 09 Dec 2025 04:09:44Reported by GoogleType 
osv
 osv🔗 osv.dev👁 1 Views

Linux kernel server message block client fix for use-after-free in smb2_close_cached_fid using kref_put_lock to hold cfid_list_lock.

Related
Refs
ReporterTitlePublishedViews
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Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1468)
6 Mar 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1495)
30 Mar 202600:00
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Tenable Nessus		openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20145-1)
4 Feb 202600:00
–nessus
Tenable Nessus		Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50006)
14 Jan 202600:00
–nessus
Tenable Nessus		Photon OS 5.0: Linux PHSA-2026-5.0-0745
30 Jan 202600:00
–nessus
Tenable Nessus		SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2026:0293-1)
27 Jan 202600:00
–nessus
Tenable Nessus		SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2026:0447-1)
12 Feb 202600:00
–nessus
Tenable Nessus		SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0472-1)
13 Feb 202600:00
–nessus
Tenable Nessus		SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0587-1)
21 Feb 202600:00
–nessus
Tenable Nessus		SUSE SLES16 Security Update : kernel (SUSE-SU-2026:20220-1)
6 Feb 202600:00
–nessus
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16 Apr 2026 04:35Current
6.3Medium risk
Vulners AI Score6.3
EPSS0.00036
linux kernelserver message blockuse after freeclose cached fidkref put lock
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