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Linux Kernel CVE-2022-50525

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

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:

iommu/fsl_pamu: Fix resource leak in fsl_pamu_probe()

The fsl_pamu_probe() returns directly when create_csd() failed, leaving irq and memories unreleased. Fix by jumping to error if create_csd() returns error.

AnalysisAI

A resource leak vulnerability exists in the Linux kernel's FSL PAMU (Freescale Peripheral Access Management Unit) IOMMU driver where the fsl_pamu_probe() function fails to release IRQ and memory resources when the create_csd() function returns an error, allowing a local privileged attacker to cause a denial of service through resource exhaustion. The vulnerability affects multiple Linux kernel versions across stable branches and has an EPSS score of 0.01% (percentile 2%), indicating low real-world exploitation probability despite the moderate CVSS 5.5 score. Patches are available from the Linux kernel maintainers across multiple stable branches.

Technical ContextAI

The vulnerability exists in the Freescale PAMU IOMMU driver (iommu/fsl_pamu), which manages memory access control for peripheral devices on Freescale-based systems. The root cause is classified as CWE-401 (Missing Release of Memory after Effective Lifetime), a resource management defect where allocated resources (IRQ handlers and memory regions) are not properly released in error handling paths. When the create_csd() function fails during device probing, the code returns directly without executing cleanup code (likely devm_free_irq() and iounmap() calls) that would normally deallocate the IRQ and memory-mapped I/O regions. This is a common kernel driver pattern failure where error paths bypass resource cleanup. The affected products are Linux kernel versions across multiple stable series, as indicated by the CPE strings cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* repeated across multiple entries, suggesting the vulnerability affects a broad range of kernel versions.

RemediationAI

Upgrade the Linux kernel to a patched version containing one of the available fixes from the kernel.org stable branches (commits referenced: 0d240ac0e4c35d3f64fc782c11433138c1bd016e, 17fd440594961c5e2ea0f58591bc1bdba0629c75, 73f5fc5f884ad0c5f7d57f66303af64f9f002526, 9238b687fd62cde14c6e2e8576a40e4246de7ebe, 9fbccdf2fefa3944dd8ba8c6a808b387787f3917, a305d0e4d0ce3166e31d7dbcb4c98b09cad6d49a, c9398323056288, de7eb55009796687fc0a1670e0b944fa8ed54e9b, or e42b543d08052c3b223bcfb48f05cbaf0b767f86). Check your current kernel version against the stable branch release notes at https://git.kernel.org/stable/ to identify the minimum fixed version for your branch. Because the vulnerability requires local privilege to trigger and affects only Freescale PAMU-equipped systems, standard security patching schedules are appropriate; emergency out-of-cycle patching is not warranted. No practical workarounds exist aside from upgrading the kernel, though restricting local user access on affected systems provides marginal mitigation.

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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container suse/sle-micro-rancher/5.3:latest Container suse/sle-micro-rancher/5.4:5.4.4.5.89 Image SLES15-SP4-BYOS Image SLES15-SP4-BYOS-Azure Image SLES15-SP4-BYOS-EC2 Image SLES15-SP4-BYOS-GCE Image SLES15-SP4-HPC-BYOS Image SLES15-SP4-HPC-BYOS-Azure Image SLES15-SP4-HPC-BYOS-EC2 Image SLES15-SP4-HPC-BYOS-GCE Image SLES15-SP4-HPC-EC2 Image SLES15-SP4-HPC-GCE Image SLES15-SP4-Hardened-BYOS Image SLES15-SP4-Hardened-BYOS-Azure Image SLES15-SP4-Hardened-BYOS-EC2 Image SLES15-SP4-Hardened-BYOS-GCE Image SLES15-SP4-Manager-Server-4-3-BYOS Image SLES15-SP4-Manager-Server-4-3-BYOS-Azure Image SLES15-SP4-Manager-Server-4-3-BYOS-EC2 Image SLES15-SP4-Manager-Server-4-3-BYOS-GCE Image SLES15-SP4-Micro-5-3-BYOS Image SLES15-SP4-Micro-5-3-BYOS-Azure Image SLES15-SP4-Micro-5-4-BYOS Image SLES15-SP4-Micro-5-4-BYOS-Azure Image SLES15-SP4-SAP Image SLES15-SP4-SAP-Azure Image SLES15-SP4-SAP-EC2 Image SLES15-SP4-SAP-GCE Image SLES15-SP4-SAPCAL Image SLES15-SP4-SAPCAL-Azure Image SLES15-SP4-SAPCAL-EC2 Image SLES15-SP4-SAPCAL-GCE Affected
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-SP4-SAP-Azure-LI-BYOS Image SLES15-SP4-SAP-Azure-LI-BYOS-Production Image SLES15-SP4-SAP-Azure-VLI-BYOS Image SLES15-SP4-SAP-Azure-VLI-BYOS-Production Image SLES15-SP4-SAP-BYOS Image SLES15-SP4-SAP-BYOS-Azure Image SLES15-SP4-SAP-BYOS-EC2 Image SLES15-SP4-SAP-BYOS-GCE Image SLES15-SP4-SAP-Hardened Image SLES15-SP4-SAP-Hardened-Azure Image SLES15-SP4-SAP-Hardened-BYOS Image SLES15-SP4-SAP-Hardened-BYOS-Azure Image SLES15-SP4-SAP-Hardened-BYOS-EC2 Image SLES15-SP4-SAP-Hardened-BYOS-GCE Image SLES15-SP4-SAP-Hardened-GCE Affected

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CVE-2022-50525 vulnerability details – vuln.today

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