CVE-2022-21546
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-21546
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-21546.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-21546
- Downstream
- Published
- 2025-05-02T22:15:15Z
- Modified
- 2025-08-09T20:01:27Z
- Summary
- [none]
- Details
-
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 "sgwritesame --ndob" we will crash in targetcoreiblock/file's executewritesame handlers when we go to access the secmd->tdata_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 initiator tries to send a normal WRITE SAME with no data buffer.
- References