CVE-2022-21546

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4226622647e3e5ac06d3ebc1605b917446157510	Patch
https://git.kernel.org/stable/c/54e57be2573cf0b8bf650375fd8752987b6c3d3b	Patch
https://git.kernel.org/stable/c/ccd3f449052449a917a3e577d8ba0368f43b8f29	Patch
https://git.kernel.org/stable/c/d8e6a27e9238dd294d6f2f401655f300dca20899	Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	Mailing List

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.19:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.19:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.19:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.19:rc4::::::
	cpe:2.3:o:linux:linux_kernel:5.19:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.19:rc6::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-05-02 22:15

Updated : 2025-11-10 17:37

NVD link : CVE-2022-21546

Mitre link : CVE-2022-21546

CVE.ORG link : CVE-2022-21546

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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