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CVE-2023-53013: ptdma: pt_core_execute_cmd() should use spinlock

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-27 · updated 2026-06-17
• Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: ptdma: pt_core_execute_cmd() should use spinlock The interrupt handler (pt_core_irq_handler()) of the ptdma driver can be called from interrupt context. The code flow in this function can lead down to pt_core_execute_cmd() which will attempt to grab a mutex, which is not appropriate in interrupt context and ultimately leads to a kernel panic. The fix here changes this mutex to a spinlock, which has been verified to resolve the issue.

Affected products

• Linux kernel: from 5.15 before 5.15.91; from 5.16 before 6.1.9; 6.2-rc1, 6.2-rc2, 6.2-rc3, 6.2-rc4 — fixed in 5.15.91, 6.1.9

How to fix

Upgrade to a fixed version: Linux kernel 5.15.91, 6.1.9. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/13ba563c2c8055ba8a637c9f70bb833b43cb4207
• https://git.kernel.org/stable/c/95e5fda3b5f9ed8239b145da3fa01e641cf5d53c
• https://git.kernel.org/stable/c/ed0d8f731e0bf1bb12a7a37698ac613db20e2794

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