CVE-2025-21955

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbdwork could be freed when after connection release. Increment rcount of ksmbdconn to indicate that requests are not finished yet and to not release the...

CVE-2025-21947

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipcmsgsendrequest req-handle is allocated using ksmbdacquireid&ipcida, based on idaalloc. req-handle from ksmbdipcloginrequest and FSCTLPIPETRANSCEIVE ioctl can be same and ...

DEBIAN-CVE-2025-21945

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-2025-21946

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds in parsesecdesc If osidoffset, gsidoffset and dacloffset could be greater than smbntsd struct size. If it is smaller, It could cause slab-out-of-bounds. And when validating sid, It need to check it includ...

DEBIAN-CVE-2025-21946

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds in parsesecdesc If osidoffset, gsidoffset and dacloffset could be greater than smbntsd struct size. If it is smaller, It could cause slab-out-of-bounds. And when validating sid, It need to check it includ...

CVE-2025-21944

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...

AZL-59760 CVE-2025-21947 affecting package kernel 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipcmsgsendrequest req-handle is allocated using ksmbdacquireid&ipcida, based on idaalloc. req-handle from ksmbdipcloginrequest and FSCTLPIPETRANSCEIVE ioctl can be same and ...

AZL-59862 CVE-2025-21947 affecting package kernel for versions less than 6.6.85.1-2

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipcmsgsendrequest req-handle is allocated using ksmbdacquireid&ipcida, based on idaalloc. req-handle from ksmbdipcloginrequest and FSCTLPIPETRANSCEIVE ioctl can be same and ...

UBUNTU-CVE-2025-21944

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...

UBUNTU-CVE-2025-21947

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipcmsgsendrequest req-handle is allocated using ksmbdacquireid&ipcida, based on idaalloc. req-handle from ksmbdipcloginrequest and FSCTLPIPETRANSCEIVE ioctl can be same and ...

CVE-2025-21967 ksmbd: fix use-after-free in ksmbd_free_work_struct

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdfreeworkstruct -interimentry of ksmbdwork could be deleted after oplock is freed. We don't need to manage it with linked list. The interim request could be immediately sent whenever a oplock brea...

CVE-2025-21967 ksmbd: fix use-after-free in ksmbd_free_work_struct

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdfreeworkstruct -interimentry of ksmbdwork could be deleted after oplock is freed. We don't need to manage it with linked list. The interim request could be immediately sent whenever a oplock brea...

CVE-2025-21967

The CVE-2025-21967 issue affects the Linux kernel ksmbd subsystem, where a use-after-free could happen in ksmbd_free_work_struct because interim_entry of ksmbd_work could be deleted after an oplock is freed. The vulnerability details and remediation are confirmed by connected advisories (Azure Li...

CVE-2025-21967 ksmbd: fix use-after-free in ksmbd_free_work_struct

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdfreeworkstruct -interimentry of ksmbdwork could be deleted after oplock is freed. We don't need to manage it with linked list. The interim request could be immediately sent whenever a oplock brea...

CVE-2025-21967

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdfreeworkstruct -interimentry of ksmbdwork could be deleted after oplock is freed. We don't need to manage it with linked list. The interim request could be immediately sent whenever a oplock brea...

CVE-2025-21955 ksmbd: prevent connection release during oplock break notification

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbdwork could be freed when after connection release. Increment rcount of ksmbdconn to indicate that requests are not finished yet and to not release the...

CVE-2025-21955 ksmbd: prevent connection release during oplock break notification

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbdwork could be freed when after connection release. Increment rcount of ksmbdconn to indicate that requests are not finished yet and to not release the...

CVE-2025-21955

The CVE-2025-21955 issue affects the Linux kernel’s ksmbd module. Affected component: ksmbd_work and ksmbd_conn handling during oplock break notification. Root cause described: ksmbd_work could be freed after the connection was released, so the r_count of ksmbd_conn is incremented to indicate req...

CVE-2025-21955

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbdwork could be freed when after connection release. Increment rcount of ksmbdconn to indicate that requests are not finished yet and to not release the...

CVE-2025-21947 ksmbd: fix type confusion via race condition when using ipc_msg_send_request

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipcmsgsendrequest req-handle is allocated using ksmbdacquireid&ipcida, based on idaalloc. req-handle from ksmbdipcloginrequest and FSCTLPIPETRANSCEIVE ioctl can be same and ...