Bug 2447385 (CVE-2026-31884)
| Summary: | CVE-2026-31884 freerdp: FreeRDP has a division-by-zero in ADPCM decoders when `nBlockAlign` is 0 | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A division by zero flaw has been discovered in FreeRDP. This division by zero exists in the MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2447422, 2447430, 2447419 | ||
| Bug Blocks: | |||
|
Description
OSIDB Bzimport
2026-03-13 18:04:22 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:16014 https://access.redhat.com/errata/RHSA-2026:16014 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:16019 https://access.redhat.com/errata/RHSA-2026:16019 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:16483 https://access.redhat.com/errata/RHSA-2026:16483 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2026:16485 https://access.redhat.com/errata/RHSA-2026:16485 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:16482 https://access.redhat.com/errata/RHSA-2026:16482 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2026:16777 https://access.redhat.com/errata/RHSA-2026:16777 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat Enterprise Linux 8.6 Telecommunications Update Service Via RHSA-2026:16814 https://access.redhat.com/errata/RHSA-2026:16814 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2026:16866 https://access.redhat.com/errata/RHSA-2026:16866 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:16865 https://access.redhat.com/errata/RHSA-2026:16865 This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:19142 https://access.redhat.com/errata/RHSA-2026:19142 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:19358 https://access.redhat.com/errata/RHSA-2026:19358 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2026:19811 https://access.redhat.com/errata/RHSA-2026:19811 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2026:20546 https://access.redhat.com/errata/RHSA-2026:20546 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:20605 https://access.redhat.com/errata/RHSA-2026:20605 |