CVE-2026-43040
net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTM_NEWNDUSEROPT netlink message. The nduseroptmsg struct has three padding fields that are never zeroed and can leak kernel data The fix is simple, just zeroes the padding fields.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 1, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
31910575a9de61e78065e93846e8e7a4894a18bf < 1da9023f6b071a38e5430ffbce4b70b2b1ac4f9c 31910575a9de61e78065e93846e8e7a4894a18bf < 2fe4d0ba690a69ad6ae9f7ab9bdc96e02610b648 31910575a9de61e78065e93846e8e7a4894a18bf < 11d7fe97421cfc81549940c20ed5ac9472d6db05 31910575a9de61e78065e93846e8e7a4894a18bf < 7f56d87e527bb5a13c3e8b0d5840cb6332822f6d 31910575a9de61e78065e93846e8e7a4894a18bf < 4f810c686fde509d1cdaa706322d9d2531f8f1a4 31910575a9de61e78065e93846e8e7a4894a18bf < b485eef3d97b7aae55ce669b6de555ec81f3d21c 31910575a9de61e78065e93846e8e7a4894a18bf < ef3645606e4a635d5062a492f22b7f490852ee67 31910575a9de61e78065e93846e8e7a4894a18bf < ae05340ccaa9d347fe85415609e075545bec589f
Linux / Linux
2.6.24
References
git.kernel.org: https://git.kernel.org/stable/c/1da9023f6b071a38e5430ffbce4b70b2b1ac4f9c git.kernel.org: https://git.kernel.org/stable/c/2fe4d0ba690a69ad6ae9f7ab9bdc96e02610b648 git.kernel.org: https://git.kernel.org/stable/c/11d7fe97421cfc81549940c20ed5ac9472d6db05 git.kernel.org: https://git.kernel.org/stable/c/7f56d87e527bb5a13c3e8b0d5840cb6332822f6d git.kernel.org: https://git.kernel.org/stable/c/4f810c686fde509d1cdaa706322d9d2531f8f1a4 git.kernel.org: https://git.kernel.org/stable/c/b485eef3d97b7aae55ce669b6de555ec81f3d21c git.kernel.org: https://git.kernel.org/stable/c/ef3645606e4a635d5062a492f22b7f490852ee67 git.kernel.org: https://git.kernel.org/stable/c/ae05340ccaa9d347fe85415609e075545bec589f