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...

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 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

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-2026-90356

In the Linux kernel, the following vulnerability has been resolved: cifs: fix loff t underflow in cifs remap file range when len == 0 With len == 0 clone to EOF, the effective length is computed as: len = src inode-i size - off; If off i size, this is a negative loff t, corrupting the ByteCount i...

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...