Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-4897
Red Hat Red Hat Enterprise Linux 10 — Polkit: polkit: denial of service via unbounded input processing through standard input
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0015 3.7 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 10 unspecified 0:125-4.el10_2.1
Red Hat Hardened Images unspecified 127-5.1.hum1
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
Mar 26 Reserved by redhat
Mar 26 Published (CNA: redhat)
Aug 26 PATCH SHIPPED — CVE-2026-4897 (Red Hat Enterprise Linux 10). Fixed in Red Hat Enterprise Linux 10 0:125-4.el10_2.1.
Description
A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| March 26, 2026 | Reserved | Reserved by redhat |
| March 26, 2026 | Published | Published (CNA: redhat) |
| August 26, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-4897 (Red Hat Enterprise Linux 10). Fixed in Red Hat Enterprise Linux 10 0:125-4.el10_2.1. |
Affected
Affected products and packages — 8 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — | 0:125-4.el10_2.1 |
| Red Hat | Red Hat Hardened Images | — | — | 127-5.1.hum1 |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-4897 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
