CVE-2026-46155

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-46155

Key Details

CVE	CVE-2026-46155
CVSS Score / Version	9.1 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-125 (Out-of-bounds Read)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

smb/client: fix out-of-bounds read in smb2_compound_op()

If a server sends a truncated response but a large OutputBufferLength, and

terminates the EA list early, check_wsl_eas() returns success without

validating that the entire OutputBufferLength fits within iov_len.

Then smb2_compound_op() does:

memcpy(idata->wsl.eas, data[0], size[0]);

Where size[0] is OutputBufferLength. If iov_len is smaller than size[0],

memcpy can read beyond the end of the rsp_iov allocation and leak adjacent

kernel heap memory. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-46155
CVE	https://www.cve.org/CVERecord?id=CVE-2026-46155

Source

Reference

NVD

CVE