CVE-2026-4897
Polkit: polkit: denial of service via unbounded input processing through standard input
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
Red Hat
commercial·USaka redhat
freedesktop
oss-projectaka freedesktop.org
and 5 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Impact
References
https://access.redhat.com/errata/RHSA-2026:59997
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:66287
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-4897
access.redhat.com
and 1 more references View all →
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