Bug 2429649 (CVE-2026-22858)
| Summary: | CVE-2026-22858 freerdp: FreeRDP global-buffer-overflow | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A global buffer overflow flaw has been discovered in FreeRDP. This global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c <= 0 can be optimized into a simple c != 0 check. As a result, non-ASCII bytes (e.g., 0x80-0xFF) may bypass the intended range restriction and be used as an index into a global lookup table, causing out-of-bounds access.
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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: | 2429801, 2429809, 2429823, 2429805, 2429816 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-01-14 18:01:38 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:3068 https://access.redhat.com/errata/RHSA-2026:3068 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:3067 https://access.redhat.com/errata/RHSA-2026:3067 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:3334 https://access.redhat.com/errata/RHSA-2026:3334 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:3975 https://access.redhat.com/errata/RHSA-2026:3975 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:4121 https://access.redhat.com/errata/RHSA-2026:4121 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Via RHSA-2026:4433 https://access.redhat.com/errata/RHSA-2026:4433 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:4437 https://access.redhat.com/errata/RHSA-2026:4437 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-2026:4439 https://access.redhat.com/errata/RHSA-2026:4439 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2026:4438 https://access.redhat.com/errata/RHSA-2026:4438 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-2026:4440 https://access.redhat.com/errata/RHSA-2026:4440 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-2026:4446 https://access.redhat.com/errata/RHSA-2026:4446 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2026:4471 https://access.redhat.com/errata/RHSA-2026:4471 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2026:4489 https://access.redhat.com/errata/RHSA-2026:4489 |