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Vulnerability record · CVE-2026-46185 · published 28 May 2026

CVE-2026-46185: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in symlink_data() Since smb2_check_message() returns success without length validation for the symlink error response, in symlink_data() it is possible for iov->iov_len to be smaller than sizeof(struct smb2_err_rsp). If the buffer only contains the base SMB2 header (64 bytes), accessing err->ErrorContextCount (at offset 66) or err->ByteCount later in symlink_data() will cause an out-of-bounds read.

9.1 CVSS 3.1 Critical EPSS 0.70% · top 48.7% CWE-125 · Out-of-bounds read
9.1CVSS 3.1 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in symlink_data() Since smb2_check_message() returns success without length validation for the symlink error response, in symlink_data() it is possible for iov->iov_len to be smaller than sizeof(struct smb2_err_rsp). If the buffer only contains the base SMB2 header (64 bytes), accessing err->ErrorContextCount (at offset 66) or err->ByteCount later in symlink_data() will cause an out-of-bounds read.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/15dc0a4de743a1aaa7b859b3aea79f08c695396c Patch
https://git.kernel.org/stable/c/2be11faf79e49fb8250a181ff0b4d2b2f084af83 Patch
https://git.kernel.org/stable/c/b8c8a704f0bc133deb171f6aeb6f3a684203e212 Patch
https://git.kernel.org/stable/c/b9561402489d41149f63e001a74384863b7b30a6 Patch
https://git.kernel.org/stable/c/d62b8d236fab503c6fec1d3e9a38bea71feaca20 Patch
https://git.kernel.org/stable/c/ef6495d4df6e7af8f3de67e65150881c880f696c Patch

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Source: NIST National Vulnerability Database (record CVE-2026-46185), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.