UBUNTU-CVE-2025-68786

In the Linux kernel, the following vulnerability has been resolved: ksmbd: skip lock-range check on equal size to avoid size==0 underflow When size equals the current isize including 0, the code used to call checklockrangefilp, isize, size - 1, WRITE, which computes size - 1 and can underflow for...

CVE-2025-68817 ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdtreeconnectput under concurrency Under high concurrency, A tree-connection object tcon is freed on a disconnect path while another path still holds a reference and later executes put/write on it...

CVE-2025-68817

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdtreeconnectput under concurrency Under high concurrency, A tree-connection object tcon is freed on a disconnect path while another path still holds a reference and later executes put/write on it...

CVE-2025-68817 ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdtreeconnectput under concurrency Under high concurrency, A tree-connection object tcon is freed on a disconnect path while another path still holds a reference and later executes put/write on it...

CVE-2025-68817

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdtreeconnectput under concurrency Under high concurrency, A tree-connection object tcon is freed on a disconnect path while another path still holds a reference and later executes put/write on it...

CVE-2025-68817

The CVE-2025-68817 entry concerns a Linux kernel ksmbd issue: a use-after-free in ksmbd_tree_connect_put under concurrent disconnect paths. Under high concurrency, a tcon (tree-connection object) can be freed on disconnect while another path still holds a reference and may later call *_put() or w...

CVE-2025-68809 ksmbd: vfs: fix race on m_flags in vfs_cache

In the Linux kernel, the following vulnerability has been resolved: ksmbd: vfs: fix race on mflags in vfscache ksmbd maintains delete-on-close and pending-delete state in ksmbdinode-mflags. In vfscache.c this field is accessed under inconsistent locking: some paths read and modify mflags under...

CVE-2025-68809 ksmbd: vfs: fix race on m_flags in vfs_cache

In the Linux kernel, the following vulnerability has been resolved: ksmbd: vfs: fix race on mflags in vfscache ksmbd maintains delete-on-close and pending-delete state in ksmbdinode-mflags. In vfscache.c this field is accessed under inconsistent locking: some paths read and modify mflags under...

CVE-2025-68809

In the Linux kernel, the following vulnerability has been resolved: ksmbd: vfs: fix race on mflags in vfscache ksmbd maintains delete-on-close and pending-delete state in ksmbdinode-mflags. In vfscache.c this field is accessed under inconsistent locking: some paths read and modify mflags under...

CVE-2025-68809

CVE-2025-68809 concerns the Linux kernel ksmbd subsystem. It describes a data race on ksmbd_inode->m_flags used to track delete-on-close and pending-delete states, caused by inconsistent locking in vfs_cache.c (some paths use ci->m_lock, others do not). The vulnerability can lead to loss or...

CVE-2025-68806 ksmbd: fix buffer validation by including null terminator size in EA length

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2setea function, which handles Extended Attributes EA, was performing buffer validation checks that incorrectly omitted the size of the null...

CVE-2025-68806

CVE-2025-68806 affects the Linux kernel ksmbd’s handling of Extended Attributes (EA). The root cause is a buffer validation flaw in smb2_set_ea where the null terminator’s size (+1) was not included in EaNameLength, leading to incorrect buffer size checks. The patch fixes validation by adding +1 ...

CVE-2025-68786 ksmbd: skip lock-range check on equal size to avoid size==0 underflow

In the Linux kernel, the following vulnerability has been resolved: ksmbd: skip lock-range check on equal size to avoid size==0 underflow When size equals the current isize including 0, the code used to call checklockrangefilp, isize, size - 1, WRITE, which computes size - 1 and can underflow for...

CVE-2025-68786 ksmbd: skip lock-range check on equal size to avoid size==0 underflow

In the Linux kernel, the following vulnerability has been resolved: ksmbd: skip lock-range check on equal size to avoid size==0 underflow When size equals the current isize including 0, the code used to call checklockrangefilp, isize, size - 1, WRITE, which computes size - 1 and can underflow for...

CVE-2025-68786

In the Linux kernel, the following vulnerability has been resolved: ksmbd: skip lock-range check on equal size to avoid size==0 underflow When size equals the current isize including 0, the code used to call checklockrangefilp, isize, size - 1, WRITE, which computes size - 1 and can underflow for...

CVE-2025-68786

CVE-2025-68786 affects the Linux kernel ksmbd code path. When i_size equals the requested size (including 0), the prior check_lock_range call used size-1 and could underflow, which is mitigated by skipping the equal-size case. The issue is resolved in upstream kernel 6.6.120, and Mageia advisorie...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: verifyremainingdatalength respects maxfragmentedrecvsize This issue is related to the check for dataoffset + datalength...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: transportipc: Validate the payload size before reading the handle. The handleresponse function dereferences the payload as a 4-byte handle without verifying that the declared payload size is at least 4 bytes. A malformed o...

Linux Distros Unpatched Vulnerability : CVE-2025-68806

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix buffer validation by including null terminator size in EA length The smb2setea function, which handles Extended Attributes EA, was performing buffer...

Linux Distros Unpatched Vulnerability : CVE-2025-68809

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: vfs: fix race on mflags in vfscache ksmbd maintains delete-on-close and pending-delete state in ksmbdinode-mflags. In vfscache.c this field is accessed...