CVE-2026-53159: misc: fastrpc: fix DMA address corruption due to find_vma misuse
Published Jun 25, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
misc: fastrpc: fix DMA address corruption due to findvma misuse
fastrpcgetargs() uses findvma() to look up the VMA for a user-provided pointer and compute a DMA address offset. When the address falls in a gap before the returned VMA, (ptr & PAGEMASK) - vma->vmstart underflows, corrupting the DMA address sent to the DSP.
Replace findvma() with vmalookup(), which returns NULL when the address is not contained within any VMA.
Affected Software
251 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.141.1-1<6.6.143.1-1
6.6.143.1-1
Linux Linux kernel>=5.1.6<5.10.260
Linux Linux kernel>=5.11<5.15.210
Linux Linux kernel>=5.16<6.1.176
Linux Linux kernel>=6.2<6.6.143
Linux Linux kernel>=6.7<6.12.94
Linux Linux kernel>=6.13<6.18.36
Linux Linux kernel>=6.19<7.0.13
Linux Linux kernel=7.1-rc1
Linux Linux kernel=7.1-rc2
Linux Linux kernel=7.1-rc3
Linux Linux kernel=7.1-rc4
Linux Linux kernel=7.1-rc5
Linux Linux kernel=7.1-rc6
Linux Linux kernel=7.1-rc7
ubuntu/linux-hwe-edge*
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Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.143.1-1 - Configuration
Update the Linux kernel fastrpc code so that fastrpc_get_args() uses vma_lookup() instead of find_vma(). Ensure the code treats the vma lookup result as NULL when the provided address is not contained within any VMA, preventing (ptr & PAGE_MASK) - vma->vm_start underflow and DMA address corruption.
Linux kernel (fastrpc) Replace find_vma() with vma_lookup() for VMA lookup in fastrpc_get_args() = Use vma_lookup() and handle NULL when address falls in a gap before the returned VMA
Event History
Jun 25, 2026
CVE Published
via MITRE·08:38 AM
Data Sourced
via MITRE·08:38 AM
DescriptionSeverity
Data Sourced
via OSV·09:16 AM
DescriptionSeverityAffected Software
Event
via OSV·09:16 AM
Data Sourced
via NVD·09:16 AM
RemedyDescriptionSeverityAffected Software
Jun 27, 2026
Data Sourced
via Microsoft·08:07 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-53159?
CVE-2026-53159 has a risk rating of 47.
2
What does CVE-2026-53159 affect?
CVE-2026-53159 affects the Linux kernel, specifically the fastrpc component.
3
How do I fix CVE-2026-53159?
To fix CVE-2026-53159, update your Linux kernel to the latest stable version that includes the patch.
4
What is the nature of the vulnerability in CVE-2026-53159?
CVE-2026-53159 involves DMA address corruption due to misuse of find_vma in the fastrpc_get_args() function.
5
When was CVE-2026-53159 published?
CVE-2026-53159 was published on June 25, 2026.