CVE-2026-33633
Publication date 19 May 2026
Last updated 19 June 2026
Ubuntu priority
Description
Kitty is a cross-platform GPU based terminal. Versions 0.46.2 and below contain a heap buffer overflow in load_image_data() that allows any process which can write to the terminal's stdin to crash kitty immediately. The vulnerability is triggered by a single APC graphics protocol command with a PNG format declaration (f=100) whose payload exceeds twice the initial buffer capacity. The overflow is attacker-controlled in both length and content, causing DoS and potentially escalation to RCE itself. This issue has been fixed in version 0.47.0.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| kitty | 26.04 LTS resolute |
Fixed 0.45.0-1ubuntu0.1~esm1
|
| 25.10 questing |
Fixed 0.41.1-2+deb13u1build0.25.10.1
|
|
| 24.04 LTS noble |
Fixed 0.32.2-1ubuntu0.4+esm1
|
|
| 22.04 LTS jammy |
Fixed 0.21.2-1ubuntu0.22.04.1+esm1
|
|
| 20.04 LTS focal |
Fixed 0.15.0-1ubuntu0.2+esm1
|
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CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8442-1
- kitty vulnerabilities
- 17 June 2026