Linux Distros Unpatched Vulnerability : CVE-2026-89640

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cifs: fix lofft underflow in cifsremapfilerange when len == 0 With len == 0 clone to EOF, the effective length is computed as: len = srcinode-isize - off; If of...

CVE-2026-89640

In the Linux kernel, the following vulnerability has been resolved: cifs: fix lofft underflow in cifsremapfilerange when len == 0 With len == 0 clone to EOF, the effective length is computed as: len = srcinode-isize - off; If off isize, this is a negative lofft, corrupting the ByteCount in the...

CVE-2026-89631

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

DEBIAN-CVE-2026-89631

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

UBUNTU-CVE-2026-89631

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

UBUNTU-CVE-2026-89640

In the Linux kernel, the following vulnerability has been resolved: cifs: fix lofft underflow in cifsremapfilerange when len == 0 With len == 0 clone to EOF, the effective length is computed as: len = srcinode-isize - off; If off isize, this is a negative lofft, corrupting the ByteCount in the...

CVE-2026-89640 cifs: fix loff_t underflow in cifs_remap_file_range() when len == 0

In the Linux kernel, the following vulnerability has been resolved: cifs: fix lofft underflow in cifsremapfilerange when len == 0 With len == 0 clone to EOF, the effective length is computed as: len = srcinode-isize - off; If off isize, this is a negative lofft, corrupting the ByteCount in the...

EUVD-2026-76543

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

CVE-2026-89631

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

CVE-2026-89631 smb: client: reject a tree connect response whose byte count is too small

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

PT-2026-90347

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SMB client where the CIFSTCon function incorrectly handles tree connect responses with a ByteCount of 0 or 1. In these cases, the calculation of the byte area...

PT-2026-90356

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An underflow of the loff t type occurs in the cifs remap file range function when the len variable is 0. This happens because the effective length is calculated as len = src inode-i size...

kernel: security and bugfix update (important)

The Linux kernel was updated to fix various bugs and security issues: - mm/page-writeback.c: do not count anon pages as dirtyable memory reclaim stalls. - mm/page-writeback.c: fix dirtybalancereserve subtraction from dirtyable memory reclaim stalls. - compatsysrecvmmsg X32 fix bnc860993...