CVE-2026-46155

Advisory lineage Upstream: 0 Downstream: 6
Analyzed
Published: 28 May 2026, 09:36
Last modified:14 Jun 2026, 17:58

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.1 CRITICAL
v3.1 (cve.org)
EPSS Score
0.48% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 May 2026, 09:36
Published
Vulnerability first disclosed
14 Jun 2026, 17:58
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.48%• Percentile: 38%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ 7449d736bbbd160c76b01b8fcdf72f58a8757d4b, < dffb44b2e06a2908e249f0f93156fc987eee1d1c | ≥ ea41367b2a602f602ea6594fc4a310520dcc64f4, < 9b3af35645ff9cd334edc130249f9a2fb2bea25f | ≥ ea41367b2a602f602ea6594fc4a310520dcc64f4, < 512d33bc8ea4ea5c19728ee118715f4b1f4d1926 | ≥ ea41367b2a602f602ea6594fc4a310520dcc64f4, < a16f70a71be4b5a4eccf39a9bf09b47285f4cb7c | ≥ ea41367b2a602f602ea6594fc4a310520dcc64f4, < 8d09328dfda089675e4c049f3f256064a1d1996b | ≥ 6.6.32, < 6.6.140 | 6.9

  • linux•linux kernel

    ≥ 6.6.32, < 6.6.140 | ≥ 6.9, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1 | 7.1:rc2

References (5)