Description
In opencv/modules/imgcodecs/src/utils.cpp, functions FillUniColor and FillUniGray do not check the input length, which can lead to integer overflow. If the image is from remote, may lead to remote code execution or denial of service. This affects Opencv 3.3 and earlier.
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 | opencv | 3.2.0+dfsg-6 | — |
| Debian 13 | opencv | 3.2.0+dfsg-6 | — |
| Debian 12 | opencv | 3.2.0+dfsg-6 | — |
| Debian 9 | opencv | 2.4.9.1+dfsg1-2+deb9u1 | DLA-2799-1 |
| Debian 8 | opencv | 2.4.9.1+dfsg-1+deb8u2 | DLA-1438-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | opencv | 2.3.1-11+deb7u3 | DLA-1235-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | opencv | 3.2.0+dfsg-4ubuntu0.1 | — |
| Ubuntu 16.04 LTS | opencv | 2.4.9.1+dfsg-1.5ubuntu1.1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | opencv-contrib-python | < 3.3.1.11 | 3.3.1.11 | GHSA-m43c-649m-pm48 |
| PyPI | opencv-python | < 3.3.1.11 | 3.3.1.11 | GHSA-m43c-649m-pm48 |
Advisories 3
- DLA-2799-1 opencv - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1438-1 opencv - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1235-1 opencv - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- [debian-lts-announce] 20180722 [SECURITY] [DLA 1438-1] opencv security update mailing-list
- https://github.com/blendin/pocs/blob/master/opencv/0.OOB_Write_FillUniColor
- [debian-lts-announce] 20180108 [SECURITY] [DLA 1235-1] opencv security update mailing-list
- https://github.com/opencv/opencv/issues/9723
- [debian-lts-announce] 20211030 [SECURITY] [DLA 2799-1] opencv security update mailing-list