CVE-2022-21546 (GCVE-0-2022-21546)

Vulnerability from cvelistv5 – Published: 2025-05-02 21:52 – Updated: 2025-12-23 13:19
VLAI?
Title
scsi: target: Fix WRITE_SAME No Data Buffer crash
Summary
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 initiator tries to send a normal WRITE SAME with no data buffer.
Severity ?
No CVSS data available.
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f6970ad31d42fceb38b5595cbad093a4d0bfcc43 , < 54e57be2573cf0b8bf650375fd8752987b6c3d3b (git)
Affected: f6970ad31d42fceb38b5595cbad093a4d0bfcc43 , < d8e6a27e9238dd294d6f2f401655f300dca20899 (git)
Affected: f6970ad31d42fceb38b5595cbad093a4d0bfcc43 , < 4226622647e3e5ac06d3ebc1605b917446157510 (git)
Affected: f6970ad31d42fceb38b5595cbad093a4d0bfcc43 , < ccd3f449052449a917a3e577d8ba0368f43b8f29 (git)
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    Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 5.4.294 , ≤ 5.4.* (semver)
Unaffected: 5.10.238 , ≤ 5.10.* (semver)
Unaffected: 5.15.182 , ≤ 5.15.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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