CVE-2025-21945

CVE-2025-21945 affects the Linux kernel (ksmbd) with a use-after-free in smb2_lock. The issue occurs when smb_lock->zero_len is non-zero, causing the ->llist of smb_lock not to be deleted and the flock to reference a freed object during error handling. This is described in the Azure Linux 3...

CVE-2025-21945 ksmbd: fix use-after-free in smb2_lock

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2lock If smblock-zerolen has value, -llist of smblock is not delete and flock is old one. It will cause use-after-free on error handling routine...

CVE-2025-21944 ksmbd: fix bug on trap in smb2_lock

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix bug on trap in smb2lock If lock count is greater than 1, flags could be old value. It should be checked with flags of smblock, not flags. It will cause bug-on trap from locksfreelock in error handling routine...

CVE-2025-21944 ksmbd: fix bug on trap in smb2_lock

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix bug on trap in smb2lock If lock count is greater than 1, flags could be old value. It should be checked with flags of smblock, not flags. It will cause bug-on trap from locksfreelock in error handling routine...

CVE-2025-21944

CVE-2025-21944 concerns the ksmbd component of the Linux kernel, where a bug in trap handling for smb2_lock can occur if the lock count exceeds 1. The root cause is that the code checked flags from the wrong source (flags) instead of the flags of smb_lock, which may lead to an erroneous trap in t...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from a post-release reuse issue in smb2lock...