CVE-2026-53159
kernel: misc: fastrpc: fix DMA address corruption due to find_vma misuse
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Severity
ModerateRed Hat Product Security
CVSS
Review impact separately from score.
Published · June 25, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's fastrpc module. The fastrpc_get_args() function incorrectly calculates a Direct Memory Access (DMA) address offset for user-provided pointers. This can lead to an underflow, corrupting the DMA address sent to the Digital Signal Processor (DSP). This corruption could result in system instability or other undefined behavior.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CWE-191 · Integer Underflow (Wrap or Wraparound)