Description
A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | JasPer | 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5 | — |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | jasper | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | jasper | 2.0.14-150000.3.37.1 | SUSE-SU-2025:3947-1, SUSE-SU-2025:03219-1 |
| SLES 15 SP6 | jasper | 2.0.14-150000.3.37.1 | SUSE-SU-2025:3947-1, SUSE-SU-2025:03219-1 |
| SLES 12 SP5 | jasper | 1.900.14-195.43.1 | SUSE-SU-2025:03367-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | jasper | 4.2.8-160000.1.1 | SUSE-SU-2026:20200-1 |
| SLES 16.0 | jasper | 4.2.8-160000.1.1 | SUSE-SU-2026:20200-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | jasper | 4.2.8-2.1 | openSUSE-SU-2025:15447-1 |
| openSUSE Leap 16.0 | jasper | 4.2.8-160000.1.1 | openSUSE-SU-2026:20138-1 |
| openSUSE Leap 15.6 | jasper | 4.2.8-150600.4.5.1 | SUSE-SU-2025:3947-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | jasper | 4.2.1-3 | — |
| Azure Linux 2 (CBL-Mariner) | jasper | 2.0.32-5 | — |
Advisories 7
- openSUSE-SU-2026:20138-1 Security update for jasper SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15447-1 jasper-4.2.8-2.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20200-1 Security update for jasper SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03219-1 Security update for jasper SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:3947-1 Security update for jasper SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03367-1 Security update for jasper SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1755 JasPer: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 3, 2026
References
- VDB-319370 | JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion vdb-entry technical-description
- VDB-319370 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #622409 | JasPer The newest master && jasper-4.2.5 Assertion Failure third-party-advisory
- https://github.com/jasper-software/jasper/issues/401 issue-tracking
- https://drive.google.com/file/d/1pPgndhHh2z0lk99Wt31W-XIW3XWt8FB3/view?usp=drive_link exploit
- https://github.com/jasper-software/jasper/commit/79185d32d7a444abae441935b20ae4676b3513d4 patch