In the Linux kernel, the following vulnerability has been resolved: spi: ep93xx: fix error pointer deref after DMA setup failure The driver falls… (CVE-2026-64169)
A vulnerability in the Linux kernel's spi: ep93xx driver was fixed to prevent dereferencing an error pointer after a DMA setup failure. The driver now properly clears DMA channel pointers on setup failure to avoid errors during later probe operations or driver unbind. This issue was identified during a code review and has been resolved.
AI Analysis
Technical Summary
The Linux kernel spi: ep93xx driver contained a flaw where, if DMA setup failed during the probe phase, the driver would fall back to PIO mode but fail to clear DMA channel pointers. This could lead to dereferencing an error pointer during subsequent probe errors or when the driver is unbound. The fix ensures that DMA channel pointers are cleared on setup failure, preventing invalid pointer dereference.
Potential Impact
If unpatched, the vulnerability could cause the kernel driver to dereference an invalid error pointer after a DMA setup failure, potentially leading to kernel instability or crashes during device probe or driver unbind operations. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue. Users should update to a kernel version that includes this patch. Since no specific patch links or affected versions are provided, check the official Linux kernel advisories or source repositories for the fix. No additional mitigation is indicated.
In the Linux kernel, the following vulnerability has been resolved: spi: ep93xx: fix error pointer deref after DMA setup failure The driver falls… (CVE-2026-64169)
Description
A vulnerability in the Linux kernel's spi: ep93xx driver was fixed to prevent dereferencing an error pointer after a DMA setup failure. The driver now properly clears DMA channel pointers on setup failure to avoid errors during later probe operations or driver unbind. This issue was identified during a code review and has been resolved.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel spi: ep93xx driver contained a flaw where, if DMA setup failed during the probe phase, the driver would fall back to PIO mode but fail to clear DMA channel pointers. This could lead to dereferencing an error pointer during subsequent probe errors or when the driver is unbound. The fix ensures that DMA channel pointers are cleared on setup failure, preventing invalid pointer dereference.
Potential Impact
If unpatched, the vulnerability could cause the kernel driver to dereference an invalid error pointer after a DMA setup failure, potentially leading to kernel instability or crashes during device probe or driver unbind operations. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue. Users should update to a kernel version that includes this patch. Since no specific patch links or affected versions are provided, check the official Linux kernel advisories or source repositories for the fix. No additional mitigation is indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-pcrr-27fc-3phm
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64169"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27a82a4a8d598912a213
Added to database: 07/19/2026, 19:38:16 UTC
Last enriched: 07/19/2026, 19:39:41 UTC
Last updated: 07/20/2026, 17:26:47 UTC
Views: 11
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