CVE-2026-64257

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject overlapping data areas in SMB2 responses Commit 53b7c271f06b "smb: client: restrict implied bcc0 exemption to responses without data area" restricted the implied bcc0 length exception to responses without a da...

CVE-2026-64257

CVE-2026-64257 affects the Linux kernel SMB2 client logic. The issue arose from overlap handling in __smb2_calc_size(), where clearing data_length could cause an invalid SMB2 response to appear as if it has no data area, allowing an unintended length-exemption path. The fix tracks data area overl...

PT-2026-64478

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SMB2 client where the smb2 calc size function clears data length during overlap handling. This behavior can cause an invalid response to be incorrectly identified ...