Bug 2459853 (CVE-2026-5450)
| Summary: | CVE-2026-5450 glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width | ||
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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: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | ashankar, codonell, dj, fweimer, pfrankli, rhel-process-autobot, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in glibc (GNU C Library). This vulnerability occurs when an application uses the `scanf` family of functions with a `%mc` format specifier, which is used for dynamically allocating memory for character input, and provides an explicit width greater than 1024. This specific combination can lead to a one-byte heap buffer overflow, potentially allowing an attacker to corrupt memory.
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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: | 2464554 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-04-20 21:01:58 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:33126 https://access.redhat.com/errata/RHSA-2026:33126 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:33170 https://access.redhat.com/errata/RHSA-2026:33170 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 Extended Update Support Long-Life Add-On Via RHSA-2026:33227 https://access.redhat.com/errata/RHSA-2026:33227 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:33231 https://access.redhat.com/errata/RHSA-2026:33231 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-2026:33228 https://access.redhat.com/errata/RHSA-2026:33228 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:33230 https://access.redhat.com/errata/RHSA-2026:33230 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Via RHSA-2026:33229 https://access.redhat.com/errata/RHSA-2026:33229 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:33226 https://access.redhat.com/errata/RHSA-2026:33226 This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:33092 https://access.redhat.com/errata/RHSA-2026:33092 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2026:34211 https://access.redhat.com/errata/RHSA-2026:34211 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-2026:36643 https://access.redhat.com/errata/RHSA-2026:36643 This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION Via RHSA-2026:37395 https://access.redhat.com/errata/RHSA-2026:37395 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2026:37396 https://access.redhat.com/errata/RHSA-2026:37396 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.19 Via RHSA-2026:40762 https://access.redhat.com/errata/RHSA-2026:40762 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.13 Via RHSA-2026:40021 https://access.redhat.com/errata/RHSA-2026:40021 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.14 Via RHSA-2026:43252 https://access.redhat.com/errata/RHSA-2026:43252 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.15 Via RHSA-2026:43226 https://access.redhat.com/errata/RHSA-2026:43226 |