CVE-2026-43376 ksmbd: fix use-after-free by using call_rcu() for oplock_info

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

CVE-2026-43376

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

CVE-2026-43376

CVE-2026-43376 affects ksmbd in the Linux kernel. The vulnerability arises from freeing oplock_info with kfree() while it can still be accessed under RCU read-side critical sections (e.g., opinfo_get), allowing a use-after-free. The fixes across connected reports switch to deferred freeing via ca...

CVE-2026-43376

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

PT-2026-39037

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the ksmbd module. The system frees the oplock info structure immediately using kfree, while it is still being accessed under RCU Read-Copy-Update read-si...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from ksmbd releasing the oplockinfo immediately during critical sections like opinfoget and...

Exploit for CVE-2026-31717

CVE-2026-31717: ksmbd DHnC Durable-Handle Reconnect Access-Con...

Linux Distros Unpatched Vulnerability : CVE-2026-31444

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix use-after-free and NULL deref in smbgrantoplock smbgrantoplock has two issues in the oplock publication sequence: 1 opinfo is linked into ci-moplist...

ksmbd: fix use-after-free and NULL deref in smb_grant_oplock()

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SUSE CVE-2026-31444

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free and NULL deref in smbgrantoplock smbgrantoplock has two issues in the oplock publication sequence: 1 opinfo is linked into ci-moplist via opinfoadd before addleasegloballist is called. If...

CVE-2026-31444

A flaw was found in ksmbd, a component of the Linux kernel. This vulnerability involves a use-after-free and a NULL pointer dereference within the smbgrantoplock function during the oplock publication sequence. An attacker could potentially exploit these issues, leading to memory corruption. This...

EUVD-2026-24776

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free and NULL deref in smbgrantoplock smbgrantoplock has two issues in the oplock publication sequence: 1 opinfo is linked into ci-moplist via opinfoadd before addleasegloballist is called. If...

CVE-2026-31444

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free and NULL deref in smbgrantoplock smbgrantoplock has two issues in the oplock publication sequence: 1 opinfo is linked into ci-moplist via opinfoadd before addleasegloballist is called. If...

CVE-2026-31444 ksmbd: fix use-after-free and NULL deref in smb_grant_oplock()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free and NULL deref in smbgrantoplock smbgrantoplock has two issues in the oplock publication sequence: 1 opinfo is linked into ci-moplist via opinfoadd before addleasegloballist is called. If...

CVE-2026-31444

CVE-2026-31444 affects ksmbd in the Linux kernel. The vulnerability arises from two flaws in the oplock publication sequence inside smb_grant_oplock(): (1) opinfo is linked into ci->m_op_list before add_lease_global_list(), so if that call fails, a freed node is dereferenced by concurrent read...

PT-2026-34349

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The smb grant oplock function in ksmbd contains two issues. First, a use-after-free occurs when opinfo is linked into ci-m op list before add lease global list is called; if the latter...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There are security vulnerabilities in the Linux kernel, which stem from issues with the smbgrantoplock function. These vulnerabilities involve reusing freed resources an...

Azure Linux 3.0 Security Update: kernel (CVE-2025-37776)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-37776 advisory. - In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in...

Azure Linux 3.0 Security Update: kernel (CVE-2025-21967)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-21967 advisory. - In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in...

Linux Distros Unpatched Vulnerability : CVE-2023-54258

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to se...