CVE-2022-21546 Information

Description

In newer version of the SBC specs we have a NDOB bit that indicates there is no data buffer that gets written out. If this bit is set using commands like \sg_write_same –ndob\ we will crash in target_core_iblock/file’s execute_write_same handlers when we go to access the se_cmd->t_data_sg because its NULL. CVSS 3.1 Base Score 7.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Reference

https://git.kernel.org/linus/ccd3f449052449a917a3e577d8ba0368f43b8f29 https://linux.oracle.com/cve/CVE-2022-21546.html https://lore.kernel.org/all/20220628022325.14627-2-michael.christie@oracle.com/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.7