SB20260816145 - Out-of-bounds read in Linux kernel scsi driver

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Main Vulnerability Database SB20260816145

SB20260816145 - Out-of-bounds read in Linux kernel scsi driver

Published: August 16, 2026

Security Bulletin ID SB20260816145
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-74557)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in iscsi_scsi_cmd_rsp() when processing a target-supplied SCSI Response sense data segment. A remote attacker can send a crafted SCSI Response with a malformed sense length field to disclose sensitive information.

The over-read can copy up to two bytes of stale conn->data contents into the command's sense buffer, which is returned to userspace.


Remediation

Install update from vendor's website.

References