kernel: smb: client: validate the whole DACL before rewriting it in cifsacl

A flaw was found in the Linux kernel's Server Message Block SMB client, specifically within the cifsacl functionality. A malicious SMB server could provide a malformed Discretionary Access Control List DACL that claims to contain more Access Control Entries ACEs than are actually present. This...

RockyLinux 9 : kernel (RLSA-2026:21556)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:21556 advisory. kernel: proc: use the same treatment to check proclseek as ones for procreaditer et.al CVE-2025-38653 kernel: ima: don't clear IMADIGSIG flag when setti...

Linux Distros Unpatched Vulnerability : CVE-2026-46195

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - smb: client: validate dacloffset before building DACL pointers parsesecdesc, buildsecdesc, and the chown path in idmodetocifsacl all add the server-supplied...

CVE-2026-46195

A flaw was found in the Linux kernel's Server Message Block SMB client. A malicious server can exploit this vulnerability on 32-bit systems by providing a crafted dacloffset value. This can cause a pointer wrap, leading to the dereferencing of invalid Discretionary Access Control List DACL fields...

CVE-2026-46195

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building DACL pointers parsesecdesc, buildsecdesc, and the chown path in idmodetocifsacl all add the server-supplied dacloffset to pntsd before proving a DACL header fits inside the returne...

CVE-2026-46195

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building DACL pointers parsesecdesc, buildsecdesc, and the chown path in idmodetocifsacl all add the server-supplied dacloffset to pntsd before proving a DACL header fits inside the returne...

CVE-2026-46195 smb: client: validate dacloffset before building DACL pointers

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building DACL pointers parsesecdesc, buildsecdesc, and the chown path in idmodetocifsacl all add the server-supplied dacloffset to pntsd before proving a DACL header fits inside the returne...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Bluetooth: MGMT: Fix possible UAFs CVE-2025-39981 kernel: ima: don't clear IMADIGSIG flag when setting or removing non-IMA xattr CVE-2025-68183 kernel: ALSA: firewire-motu: fix buffer...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: ksmbd: It is required that the ACE size be of a minimum value in smbcheckpermdacl. Both ACE-walking loops in smbcheckpermdacl only protect against a remaining buffer being undersized, but not against an ACE whose declared ace-siz...

Astra Linux - уязвимость в linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: Fixed a slab out-of-bounds write in smbinheritdacl. The slab out-of-bounds write occurs because the offsets are larger than the allocation size of pntsd. This patch adds a check to validate the three offsets using the...

UBUNTU-CVE-2026-43490

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate inherited ACE SID length smbinheritdacl walks the parent directory DACL loaded from the security descriptor xattr. It verifies that each ACE contains the fixed SID header before using it, but does not verify that...

CVE-2026-43490

The CVE-2026-43490 entry concerns the Linux kernel ksmbd SMB server. The flaw arises in smb_inherit_dacl() where the code validates a fixed SID header but not the variable-length SID described by sid.num_subauth, allowing a malformed inheritable ACE to advertise more subauthorities than present. ...

CVE-2026-8449

No description is available for this CVE...

UBUNTU-CVE-2026-8449

Rejected reason: This CVE ID has been rejected or withdrawn...

CVE-2026-8449

This CVE ID has been rejected or withdrawn...

CVE-2026-8449

Affects Linux ksmbd. A remote memory corruption flaw in the ACL inheritance path allows remote clients with directory-creation permissions to trigger a heap out-of-bounds read and subsequent heap corruption by crafting a Malformed SID in a DACL. Exploitation can cause kernel instability and denia...

PT-2026-40453

Name of the Vulnerable Software and Affected Versions Linux ksmbd affected versions not specified Description A remote memory corruption issue exists in the ACL inheritance path. Remote clients with directory creation permissions can trigger a heap out-of-bounds read and subsequent heap corruptio...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel. This vulnerability stems from the parsedacl function in SMB clients, which treats ACEs matching sidunixNFSmode as NFS mo...

EUVD-2026-27461

Sandboxie-Plus is an open source sandbox-based isolation software for Windows. In versions 1.17.2 and earlier, the SbieIniServer RunSbieCtrl handler contains a stack buffer overflow. The MSGIDSBIEINIRUNSBIECTRL message is handled before normal sandbox and impersonation checks, and for non-sandbox...