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CVE-2026-46185 is an out-of-bounds read vulnerability in the Linux kernel SMB client function symlink_data(). The smb2_check_message() function accepts SMB2 symlink error responses without validating their length, allowing iov->iov_len to be smaller than sizeof(struct smb2_err_rsp). When a response contains only the 64-byte base SMB2 header, subsequent access to ErrorContextCount at offset 66 or ByteCount reads beyond the response buffer. The flaw can potentially cause denial of service or unintended kernel memory access.
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A vulnerability covered by the Miracle Linux kernel security update AXSA-2026-1991. No flaw-specific technical description is provided.
An out-of-bounds read in symlink_data() within the Linux kernel SMB client.
An out-of-bounds read in the Linux kernel SMB client caused by insufficient length validation of SMB2 symlink error responses. A response containing only the 64-byte SMB2 header can trigger reads beyond the buffer when symlink_data() accesses ErrorContextCount or ByteCount. The reference assigns a CVSS v3 base score of 9.1, indicating potential confidentiality and availability impacts, although vendor severity is LOW.
An out-of-bounds read vulnerability in the Linux kernel SMB client results from insufficient length validation of symlink error responses. A response containing only the 64-byte SMB2 header can trigger reads beyond the buffer when symlink_data() accesses error fields. The reference assigns a critical CVSS v3 score of 9.1, with high confidentiality and availability impacts. Updating the Echo linux package and related packages to version 6.1.176-1 or later addresses the vulnerability.
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