liblwip0: A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version...
CVE-2020-22284 is fixed in liblwip0 on 1 platform by liblwip0 2.1.2+dfsg1-4ubuntu0.1~esm1 (version 2.1.2+dfsg1-4ubuntu0.1~esm1), released May 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| liblwip0 · Ubuntu 20.04 LTS (focal) | 2.1.2+dfsg1-4ubuntu0.1~esm1 | liblwip0 2.1.2+dfsg1-4ubuntu0.1~esm1 | May 18, 2026 |
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