CVE-2026-31658

MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit() When dma_map_single() fails in tse_start_xmit(), the function returns NETDEV_TX_OK without freeing the skb. Since NETDEV_TX_OK tells the stack the packet was consumed, the skb is never freed, leaking memory on every DMA mapping failure. Add dev_kfree_skb_any() before returning to properly free the skb.

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: 4/24/2026Modified: 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/2eb9d67704ca8f1101f7435b85f113ede471f9f2Patchhttps://git.kernel.org/stable/c/3aca300e88afe56afb000cdc4c65383014fb17f9Patchhttps://git.kernel.org/stable/c/60f462cd2716d86bd2174f9d5e035c9278f30480Patchhttps://git.kernel.org/stable/c/6dede3967619b5944003227a5d09fdc21ed57d10Patchhttps://git.kernel.org/stable/c/9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7Patchhttps://git.kernel.org/stable/c/ae2cd46f57f422b51aedd406ff5d75cbff401d5dPatchhttps://git.kernel.org/stable/c/cb1d318702fdf643061350d164250198df4116f2Patchhttps://git.kernel.org/stable/c/d5ec406f0543bd6cdfd563b08015fdec8c4d5712Patchhttps://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html