High 7.5Published Oct 21, 2024

CVE-2024-49997net: ethernet: lantiq_etop: fix memory disclosure

Updated under an hour ago (Oct 26, 2026, 4:10 PM ET)

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Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 504d4721ee8e432af4b5f196a08af38bc4dac5fe before 905f06a34f960676e7dc77bea00f2f8fe18177ad; 504d4721ee8e432af4b5f196a08af38bc4dac5fe builds before 60c068444c20bf9a3e22b65b5f6f3d9edc852931; 504d4721ee8e432af4b5f196a08af38bc4dac5fe builds before 185df159843d30fb71f821e7ea4368c2a3bfcd36; from 504d4721ee8e432af4b5f196a08af38bc4dac5fe before 469856f76f4802c5d7e3d20e343185188de1e2db; 504d4721ee8e432af4b5f196a08af38bc4dac5fe builds before 2bf4c101d7c99483b8b15a0c8f881e3f399f7e18; from 504d4721ee8e432af4b5f196a08af38bc4dac5fe before e66e38d07b31e177ca430758ed97fbc79f27d966; from 504d4721ee8e432af4b5f196a08af38bc4dac5fe before 1097bf16501ed5e35358d848b0a94ad2830b0f65; 504d4721ee8e432af4b5f196a08af38bc4dac5fe builds before 431b122933b197820d319eb3987a67d04346ce9e; and 1 more ranges	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.2	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.0 before 5.10.227; from 5.11 before 5.15.168; from 5.16 before 6.1.113; from 6.2 before 6.6.55; from 6.7 before 6.10.14; from 6.11 before 6.11.3; 6.12	NVD

References

References

https://git.kernel.org/stable/c/905f06a34f960676e7dc77bea00f2f8fe18177ad
https://git.kernel.org/stable/c/60c068444c20bf9a3e22b65b5f6f3d9edc852931
https://git.kernel.org/stable/c/185df159843d30fb71f821e7ea4368c2a3bfcd36	patch
https://git.kernel.org/stable/c/469856f76f4802c5d7e3d20e343185188de1e2db	patch
https://git.kernel.org/stable/c/2bf4c101d7c99483b8b15a0c8f881e3f399f7e18	patch
https://git.kernel.org/stable/c/e66e38d07b31e177ca430758ed97fbc79f27d966	patch
https://git.kernel.org/stable/c/1097bf16501ed5e35358d848b0a94ad2830b0f65	patch
https://git.kernel.org/stable/c/431b122933b197820d319eb3987a67d04346ce9e	patch
https://git.kernel.org/stable/c/45c0de18ff2dc9af01236380404bbd6a46502c69	patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.