CVE-2026-31737

MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net: ftgmac100: fix ring allocation unwind on open failure ftgmac100_alloc_rings() allocates rx_skbs, tx_skbs, rxdes, txdes, and rx_scratch in stages. On intermediate failures it returned -ENOMEM directly, leaking resources allocated earlier in the function. Rework the failure path to use staged local unwind labels and free allocated resources in reverse order before returning -ENOMEM. This matches common netdev allocation cleanup style.

CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 5/1/2026Modified: 7/14/2026

Related Intelligence (1)

CRITICALAi

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-209-04.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.6 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens is preparing fix versions and recommend

CVE-2021-41617CVE-2023-28531
CISA Advisories

References (10)

https://git.kernel.org/stable/c/184b3a500d60ea48d1b176103cff1706c456edf3Patchhttps://git.kernel.org/stable/c/78da43320d9d6ed788147fb085184e4fc801f057Patchhttps://git.kernel.org/stable/c/82f86111f0704ab2ded11a2033bc6cf0be3e09eaPatchhttps://git.kernel.org/stable/c/8351d18989c8642fc53e2e12d94e42314a39b078Patchhttps://git.kernel.org/stable/c/8a71911fc7eeea930153322bc1efc065db8cd97ePatchhttps://git.kernel.org/stable/c/a7e1bf392acf11dc4209820fef75758f6e42bd65Patchhttps://git.kernel.org/stable/c/c0fd0fe745f5e8c568d898cd1513d0083e46204aPatchhttps://git.kernel.org/stable/c/d45230081f19c280096241353c26b0de457de795Patchhttps://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html