CVE-2022-21546 – Dell SBC Null Data Buffer Access Crash Vulnerability (Denial of Service)

The following table lists the changes that have been made to the
CVE-2022-21546 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    May. 02, 2025

    Action Type Old Value New Value
    Added 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).
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
    Added Reference https://git.kernel.org/linus/ccd3f449052449a917a3e577d8ba0368f43b8f29
    Added Reference https://linux.oracle.com/cve/CVE-2022-21546.html
    Added Reference https://lore.kernel.org/all/[email protected]/
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