Description
fzf is vulnerable to Integer Overflow leading to crash in FuzzyMatchV2 function. When input line length is approximately 2,200,000 bytes and pattern length is 999 bytes, the product overflows. The Go runtime detects the invalid slice bounds and terminates the process immediately with a non-recoverable panic.
This issue was fixed in version 0.73.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| fzf | fzf | < 0.73.1 | 0.73.1 |
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 | fzf | 0.73.1-1 | — |
| Debian 13 | fzf | No fix yet | — |
| Debian 12 | fzf | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | fzf | No fix yet | — |
| Ubuntu 25.10 | fzf | No fix yet | — |
| Ubuntu 24.04 LTS | fzf | No fix yet | — |
| Ubuntu 22.04 LTS | fzf | No fix yet | — |
| Ubuntu 20.04 LTS | fzf | No fix yet | — |
References
- https://cert.pl/en/posts/2026/06/CVE-2026-53432 third-party-advisory
- https://github.com/junegunn/fzf product
- https://github.com/junegunn/fzf/commit/ccedd064ca56921a4235219516b3d834f60e7b91 issue-tracking