CVE-2026-98145

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: reject a command chain that carries no commands A chain whose command_count is zero passes the payload length check, because struct_size(payload, data, 0) is just the header. The fill loop then does not run, so offset stays zero and the request is submitted with a zero-length buffer. On firmware without AIE2_NPU_COMMAND that ends at the opcode check, since op is still ERT_INVALID_CMD and aie2_get_chain_msg_op() answers MSG_OP_MAX_OPCODE. aie2_get_npu_chain_msg_op() answers MSG_OP_CHAIN_EXEC_NPU whatever it is given, so there the submission continues to drm_clflush_virt_range(cmd_buf, 0), which reads the byte before the buffer and faults on the vmap guard page. EXEC_CMD is reachable by any process that can open the render node. Reject the request instead.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/ed74e8d603df457bfcf16ed4f8f1660a1525759e	Patch
https://git.kernel.org/stable/c/ef6d27af71e1dc43181ec797a6aaa77c27c36786	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.3:rc1::::::

History

26 Oct 2026, 18:12

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel:7.3:rc1:::::: cpe:2.3:o:linux:linux_kernel::::::::
First Time		Linux linux Kernel Linux
CWE		CWE-125
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
References	~~() https://git.kernel.org/stable/c/ed74e8d603df457bfcf16ed4f8f1660a1525759e -~~	() https://git.kernel.org/stable/c/ed74e8d603df457bfcf16ed4f8f1660a1525759e - Patch
References	~~() https://git.kernel.org/stable/c/ef6d27af71e1dc43181ec797a6aaa77c27c36786 -~~	() https://git.kernel.org/stable/c/ef6d27af71e1dc43181ec797a6aaa77c27c36786 - Patch

25 Sep 2026, 11:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-25 11:17

Updated : 2026-10-26 18:12

NVD link : CVE-2026-98145

Mitre link : CVE-2026-98145

CVE.ORG link : CVE-2026-98145

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

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