CVE-2026-103222
Publication date 2 October 2026
Last updated 2 October 2026
Ubuntu priority
Description
A vulnerability was determined in Blosc C-Blosc2 up to 3.3.2. This impacts the function blosclz_decompress of the file blosc/blosclz.c of the component blosclz Decompression. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. Upgrading to version 3.3.3 will fix this issue. This patch is called fe2964d114d97847f56570a0ab2be2c57ccbeedc. The affected component should be upgraded.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| c-blosc2 | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy | Not in release |
Severity score breakdown
CVSS version:
Base score
6.3 · Medium
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Base score
5.6 · Medium
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-103222
- https://github.com/Blosc/c-blosc2/
- https://github.com/Blosc/c-blosc2/commit/fe2964d114d97847f56570a0ab2be2c57ccbeedc
- https://github.com/Blosc/c-blosc2/releases/tag/v3.3.3
- https://vuldb.com/cve/CVE-2026-103222
- https://vuldb.com/submit/954976
- https://vuldb.com/vuln/411905
- https://vuldb.com/vuln/411905/cti