Summary
Michał Majchrowicz and Marcin Wyczechowski discovered that sed incorrectly
handled symbolic links when performing in-place edits. A local attacker
could possibly use this issue to overwrite arbitrary files.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | sed | 4.8-1ubuntu2.1 |
| Ubuntu · 24.04 LTS 24.04:LTS | sed | 4.9-2ubuntu0.24.04.1 |
| Ubuntu · 25.10 | sed | 4.9-2ubuntu0.25.10.1 |
| Ubuntu · 26.04 LTS 26.04:LTS | sed | 4.9-2ubuntu1 |
References
-
report
https://ubuntu.com/security/CVE-2026-5958