CVE-2023-53493 Affecting dlm-kmp-default package, versions <6.4.0-150600.23.73.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-SLES156-DLMKMPDEFAULT-13579117
  • published16 Oct 2025
  • disclosed15 Oct 2025

Introduced: 15 Oct 2025

NewCVE-2023-53493  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 dlm-kmp-default to version 6.4.0-150600.23.73.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dlm-kmp-default package and not the dlm-kmp-default package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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

accel/qaic: tighten bounds checking in decode_message()

Copy the bounds checking from encode_message() to decode_message().

This patch addresses the following concerns. Ensure that there is enough space for at least one header so that we don't have a negative size later.

if (msg_hdr_len &lt; sizeof(*trans_hdr))

Ensure that we have enough space to read the next header from the msg->data.

if (msg_len &gt; msg_hdr_len - sizeof(*trans_hdr))
    return -EINVAL;

Check that the trans_hdr->len is not below the minimum size:

if (hdr_len &lt; sizeof(*trans_hdr))

This minimum check ensures that we don't corrupt memory in decode_passthrough() when we do.

memcpy(out_trans-&gt;data, in_trans-&gt;data, len - sizeof(in_trans-&gt;hdr));

And finally, use size_add() to prevent an integer overflow:

if (size_add(msg_len, hdr_len) &gt; msg_hdr_len)

CVSS Base Scores

version 3.1