Description
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | lwip | 2.1.3+dfsg1-1 | — |
| Debian 13 | lwip | 2.1.3+dfsg1-1 | — |
| Debian 12 | lwip | 2.1.3+dfsg1-1 | — |
| Debian 10 | lwip | 2.0.3-3+deb10u2 | DLA-3655-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | lwip | 2.1.2+dfsg1-4ubuntu0.1~esm1 | — |
Advisories 2
- DLA-3655-1 lwip - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SCA-2024-0004 Third party vulnerabilities in SICK CDE-100 SICK PSIRT · Nov 7, 2024