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Linux Kernel CVE-2022-50515

MEDIUM
Memory Leak (CWE-401)
2025-10-07 416baaa9-dc9f-4396-8d5f-8c081fb06d67
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
5.5 LOW
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 17, 2026 - 20:45 vuln.today
Patch released
Mar 17, 2026 - 20:45 nvd
Patch available
CVE Published
Oct 07, 2025 - 16:15 nvd
MEDIUM 5.5

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: Fix memory leak in hpd_rx_irq_create_workqueue()

If construction of the array of work queues to handle hpd_rx_irq offload work fails, we need to unwind. Destroy all the created workqueues and the allocated memory for the hpd_rx_irq_offload_work_queue struct array.

AnalysisAI

A memory leak vulnerability exists in the Linux kernel's AMD GPU (amdgpu) driver within the hpd_rx_irq_create_workqueue() function, where allocated memory for work queue structures fails to be properly freed if workqueue construction fails partway through initialization. This affects all Linux kernel versions with the vulnerable amdgpu driver code and requires local access with low privileges to trigger. An attacker can repeatedly trigger this condition to exhaust kernel memory and cause a denial of service, though the EPSS score of 0.01% indicates this is rarely exploited in practice. Patches are available from the Linux kernel stable branches.

Technical ContextAI

The vulnerability resides in the AMD GPU (amdgpu) Direct Rendering Manager (DRM) subsystem of the Linux kernel, specifically in memory management during workqueue initialization for handling Hot Plug Detect (HPD) RX interrupt offload work. The root cause is classified as CWE-401 (Missing Release of Memory after Effective Lifetime), a memory leak that occurs when the hpd_rx_irq_create_workqueue() function allocates memory for an array of hpd_rx_irq_offload_work_queue structures but fails to deallocate previously created workqueues if a subsequent allocation or construction operation fails. The vulnerability affects Linux kernel implementations across all versions containing this code path, as indicated by the CPE entries (cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*). When workqueue initialization fails partway through the loop, the function returns an error without calling destroy_workqueue() on already-allocated queues or freeing the struct array, leading to kernel memory exhaustion over repeated trigger attempts.

RemediationAI

Apply the latest available Linux kernel patch from your distribution's kernel vendor or the Linux kernel stable branches at https://git.kernel.org/stable/. Check for commits 3ba3814c00a4817eb1cd31eff08d921c40e5f3a4, 600de40ed50c8b5ecb9c7a4f41eb882066c15a00, 7136f956c73c4ba50bfeb61653dfd6a9669ea915, and 8b8da09da2701330e7f2c371655887e3d7defe90 in your kernel version's release notes and apply kernel updates provided by your operating system vendor (Red Hat, Ubuntu, SUSE, etc.). Until patching is possible, monitor kernel memory usage on systems with AMD GPU hardware and consider restricting local user access on shared systems to minimize the attack surface. If using cloud infrastructure with AMD GPUs, verify your hypervisor/host kernel is patched. No known workarounds exist to disable the vulnerable code path without recompiling the kernel, so patching is the primary remediation path.

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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container suse/sle-micro/base-5.5:2.0.4-5.8.224 Image SLES15-SP5-BYOS-Azure Image SLES15-SP5-BYOS-EC2 Image SLES15-SP5-BYOS-GCE Image SLES15-SP5-EC2 Image SLES15-SP5-GCE Image SLES15-SP5-HPC-BYOS-Azure Image SLES15-SP5-HPC-BYOS-EC2 Image SLES15-SP5-HPC-BYOS-GCE Image SLES15-SP5-Hardened-BYOS-Azure Image SLES15-SP5-Hardened-BYOS-EC2 Image SLES15-SP5-Hardened-BYOS-GCE Image SLES15-SP5-Micro-5-5 Image SLES15-SP5-Micro-5-5-Azure Image SLES15-SP5-Micro-5-5-BYOS Image SLES15-SP5-Micro-5-5-BYOS-Azure Image SLES15-SP5-Micro-5-5-EC2 Image SLES15-SP5-SAPCAL-Azure Image SLES15-SP5-SAPCAL-EC2 Image SLES15-SP5-SAPCAL-GCE Affected
Container suse/sle-micro/kvm-5.5:2.0.4-3.5.429 Affected
Container suse/sle-micro/rt-5.5:2.0.4-4.5.535 Affected
Image SLES15-SP5-SAP-Azure-3P Image SLES15-SP5-SAP-Azure-LI-BYOS Image SLES15-SP5-SAP-Azure-LI-BYOS-Production Image SLES15-SP5-SAP-Azure-VLI-BYOS Image SLES15-SP5-SAP-Azure-VLI-BYOS-Production Image SLES15-SP5-SAP-BYOS-Azure Image SLES15-SP5-SAP-BYOS-EC2 Image SLES15-SP5-SAP-BYOS-GCE Image SLES15-SP5-SAP-Hardened-Azure Image SLES15-SP5-SAP-Hardened-BYOS-Azure Image SLES15-SP5-SAP-Hardened-BYOS-EC2 Image SLES15-SP5-SAP-Hardened-BYOS-GCE Image SLES15-SP5-SAP-Hardened-GCE Affected
SUSE Liberty Linux 8 Fixed

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CVE-2022-50515 vulnerability details – vuln.today

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