SECUFOCUSNOW
Home›CVE index›CVE-2022-21546
Review reviewHigh

CVE-2022-21546

Linux Linux, linux kernel, debian linux

In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fix WRITE_SAME No Data Buffer crash 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. This patch adds a check for the NDOB bit in the common WRITE SAME code because we don't support it. And, it adds a check for zero SG elements in each handler in case the...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2025.05.03
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fix WRITE_SAME No Data Buffer crash 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. This patch adds a check for the NDOB bit in the common WRITE SAME code because we don't support it. And, it adds a check for zero SG elements in each handler in case the...

Affected product and versions

Product
Linux Linux, linux kernel, debian linux
Affected versions
>= f6970ad31d42fceb38b5595cbad093a4d0bfcc43 < 54e57be2573cf0b8bf650375fd8752987b6c3d3b, >= f6970ad31d42fceb38b5595cbad093a4d0bfcc43 < d8e6a27e9238dd294d6f2f401655f300dca20899, >= f6970ad31d42fceb38b5595cbad093a4d0bfcc43 < 4226622647e3e5ac06d3ebc1605b917446157510, >= f6970ad31d42fceb38b5595cbad093a4d0bfcc43 < ccd3f449052449a917a3e577d8ba0368f43b8f29, >= 3.8, < 5.4.294, >= 5.5 < 5.10.238, >= 5.11 < 5.15.182, >= 5.16 < 5.19, 5.19, 11.0
Fixed versions
5.4.294, 5.10.238, 5.15.182, 5.19

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel, debian linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-476