01 Record

CVE-2026-43040

net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.12% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.4% of scored records. A rank, not a probability.
NVD base score: 7.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-14.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-05-01 14:15Z4 MO AGO

Last updated

2026-07-14 12:49Z1 MO AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-909Missing Initialization of ResourceClass

Data version

5.2

Document digest

80ad96051c146dd7948ce8cd01a62a2d3754195871b7cf83b04ad6671d2664b3

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux31910575a9de61e78065e93846e8e7a4894a18bf to < 1da9023f6b071a38e5430ffbce4b70b2b1ac4f9c, 31910575a9de61e78065e93846e8e7a4894a18bf to < 2fe4d0ba690a69ad6ae9f7ab9bdc96e02610b648, 31910575a9de61e78065e93846e8e7a4894a18bf to < 11d7fe97421cfc81549940c20ed5ac9472d6db05, 31910575a9de61e78065e93846e8e7a4894a18bf to < 7f56d87e527bb5a13c3e8b0d5840cb6332822f6d, 31910575a9de61e78065e93846e8e7a4894a18bf to < 4f810c686fde509d1cdaa706322d9d2531f8f1a4, 31910575a9de61e78065e93846e8e7a4894a18bf to < b485eef3d97b7aae55ce669b6de555ec81f3d21c, 31910575a9de61e78065e93846e8e7a4894a18bf to < ef3645606e4a635d5062a492f22b7f490852ee67, 31910575a9de61e78065e93846e8e7a4894a18bf to < ae05340ccaa9d347fe85415609e075545bec589f, 2.6.24—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/1da9023f6b071a38e5430ffbce4b70b2b1ac4f9c
git.kernel.orghttps://git.kernel.org/stable/c/2fe4d0ba690a69ad6ae9f7ab9bdc96e02610b648
git.kernel.orghttps://git.kernel.org/stable/c/11d7fe97421cfc81549940c20ed5ac9472d6db05
git.kernel.orghttps://git.kernel.org/stable/c/7f56d87e527bb5a13c3e8b0d5840cb6332822f6d
git.kernel.orghttps://git.kernel.org/stable/c/4f810c686fde509d1cdaa706322d9d2531f8f1a4
git.kernel.orghttps://git.kernel.org/stable/c/b485eef3d97b7aae55ce669b6de555ec81f3d21c
git.kernel.orghttps://git.kernel.org/stable/c/ef3645606e4a635d5062a492f22b7f490852ee67
git.kernel.orghttps://git.kernel.org/stable/c/ae05340ccaa9d347fe85415609e075545bec589f
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-43040

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-43040

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References