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PulseAudio CVE-2026-14330

| EUVDEUVD-2026-41007 MEDIUM
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-07-01 redhat GHSA-26rf-3h26-fc3w
5.5
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
5.5 MEDIUM

Local socket access inherently requires an active user session (AV:L, PR:L); purely a DoS crash with no confidentiality or integrity impact (C:N/I:N).

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 01, 2026 - 14:59 vuln.today
CVE Published
Jul 01, 2026 - 14:09 cve.org
MEDIUM 5.5

DescriptionCVE.org

Multiple unbounded alloca() calls in the PulseAudio protocol server.

AnalysisAI

Stack exhaustion via multiple unbounded alloca() calls in the PulseAudio protocol server on Red Hat Enterprise Linux 8, 9, and 10 allows a local low-privileged attacker to crash the audio daemon, resulting in denial of service. The root cause (CWE-770) is the absence of size validation on attacker-controlled protocol parameters before passing them to alloca(), a stack-based allocator with no OS-enforced ceiling. No public exploit code has been identified and this CVE is not listed in the CISA KEV catalog at time of analysis.

Technical ContextAI

PulseAudio is a userspace sound server daemon that exposes a Unix-domain socket interface for local audio clients. Its protocol server component parses incoming client messages and may use caller-supplied length fields directly in alloca() calls - a C function that allocates memory on the current stack frame rather than the heap. Unlike malloc(), alloca() bypasses heap allocator limits and is bounded only by the thread's stack size; supplying an excessively large value triggers a stack overflow and immediate process crash. CWE-770 (Allocation of Resources Without Limits or Throttling) is the precise root cause class: untrusted size values from protocol messages are not clamped or validated before consumption. CPE data confirms the vulnerability exists in PulseAudio as packaged across Red Hat Enterprise Linux 8 (cpe:2.3:a:red_hat:red_hat_enterprise_linux_8), RHEL 9 (cpe:2.3:a:red_hat:red_hat_enterprise_linux_9), and RHEL 10 (cpe:2.3:a:red_hat:red_hat_enterprise_linux_10).

RemediationAI

No exact patched PulseAudio package version is identified in the available references - patch availability and specific fix versions must be confirmed directly via the Red Hat security advisory at https://access.redhat.com/security/cve/CVE-2026-14330 and the Bugzilla report at https://bugzilla.redhat.com/show_bug.cgi?id=2495907; apply the vendor-released RPM update as soon as it becomes available via standard RHEL channels (yum/dnf update pulseaudio). As an immediate compensating control on multi-user systems, restrict which local user accounts can connect to the PulseAudio socket - this is typically managed through session ownership enforced by the desktop session manager, so disabling console login for untrusted accounts reduces exposure. On server systems where audio is not required, disabling or removing the PulseAudio daemon (systemctl disable --now pulseaudio.service pulseaudio.socket) eliminates the attack surface entirely with no functional trade-off for headless workloads.

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Not-Affected

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CVE-2026-14330 vulnerability details – vuln.today

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