Out-of-bounds Read Affecting kernel-devel-matched package, versions <0:5.14.0-687.22.1.el9_8


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.48% (38th percentile)

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  • Snyk IDSNYK-ALMALINUX9-KERNELDEVELMATCHED-17927243
  • published10 Jul 2026
  • disclosed6 Jul 2026

Introduced: 6 Jul 2026

NewCVE-2026-46155  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 kernel-devel-matched to version 0:5.14.0-687.22.1.el9_8 or higher.
This issue was patched in ALSA-2026:36018.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel-matched package and not the kernel-devel-matched package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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 Base Scores

version 3.1