CVE-2024-49997: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: lantiq_etop: fix memory disclosure When applying padding, the buffer is not zeroed, which results in memory disclosure. The mentioned data is observed on the wire. This patch uses skb_put_padto() to pad Ethernet frames properly. The mentioned function zeroes the expanded buffer. In case the packet cannot be padded it is silently dropped. Statistics are also not incremented. This driver does not support statistics in the old 32-bit format or the new 64-bit format. These will be added in the future. In its current form, the patch should be easily backported to stable versions. Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets in hardware, so software padding must be applied.

Is your site exposed to CVE-2024-49997?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-212 CWE-212

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.0 — 5.10.227
linux	linux_kernel	5.11 — 5.15.168
linux	linux_kernel	5.16 — 6.1.113
linux	linux_kernel	6.2 — 6.6.55
linux	linux_kernel	6.7 — 6.10.14
linux	linux_kernel	6.11 — 6.11.3
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/1097bf16501ed5e35358d848b0a94ad2830b0f65 https://git.kernel.org/stable/c/185df159843d30fb71f821e7ea4368c2a3bfcd36 https://git.kernel.org/stable/c/2bf4c101d7c99483b8b15a0c8f881e3f399f7e18 https://git.kernel.org/stable/c/431b122933b197820d319eb3987a67d04346ce9e https://git.kernel.org/stable/c/45c0de18ff2dc9af01236380404bbd6a46502c69 https://git.kernel.org/stable/c/469856f76f4802c5d7e3d20e343185188de1e2db https://git.kernel.org/stable/c/e66e38d07b31e177ca430758ed97fbc79f27d966

Other References

https://git.kernel.org/stable/c/60c068444c20bf9a3e22b65b5f6f3d9edc852931 https://git.kernel.org/stable/c/905f06a34f960676e7dc77bea00f2f8fe18177ad https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html https://cert-portal.siemens.com/productcert/html/ssa-265688.html https://cert-portal.siemens.com/productcert/html/ssa-355557.html https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Frequently Asked Questions

What is CVE-2024-49997? +

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: lantiq_etop: fix memory disclosure When applying padding, the buffer is not zeroed, which results in memory disclosure. The mentioned data is observed on the wire. This patch uses skb_put_padto() to pad Ethernet frames properly. The mentioned function zeroes the expanded buffer. In case the packet cannot be padded it is silently dropped. Statistics are also not incremented. This driver does not support statistics in the old 32-bit format or the new 64-bit format. These will be added in the future. In its current form, the patch should be easily backported to stable versions. Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets in hardware, so software padding must be applied. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-49997? +

CVE-2024-49997 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-49997? +

CVE-2024-49997 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-49997? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-65965

Grype is a vulnerability scanner for container images and filesystems. A credential disclosure vulnerability was found in Grype, affecting versions …

CVE-2026-53604

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. Prior to version 0.3.8, the web handler renderMobileBundle passes …

CVE-2025-24884

kube-audit-rest is a simple logger of mutation/creation requests to the k8s api. If the "full-elastic-stack" example vector configuration was used …

CVE-2026-96879

Improper removal of sensitive information before storage or transfer vulnerability in Wikimedia Foundation's Mediawiki - FlaggedRevs extension through 1.46.0.

CVE-2026-42880 9.6

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to …

CVE-2026-85094 8.8

The Canva Android App before 2.376.0 did not restrict the headers returned to an external origin running in a privileged …

CVE-2024-49997