Riskcovery

CVE-2026-31442

dmaengine: idxd: Fix possible invalid memory access after FLR

State
Published
Severity
7.8 High
Published
Apr 22, 2026
Updated
Oct 19, 2026
Reserved
Mar 9, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: idxd: Fix possible invalid memory access after FLR

In the case that the first Function Level Reset (FLR) concludes correctly, but in the second FLR the scratch area for the saved configuration cannot be allocated, it's possible for a invalid memory access to happen.

Always set the deallocated scratch area to NULL after FLR completes.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • 98d187a989036096feaa2fef1ec3b2240ecdeacf to before 504c0e6751001ac46917c73e703f2b1b92cfc026Affected
  • 98d187a989036096feaa2fef1ec3b2240ecdeacf to before 867d0c801f21370d561420fa32f2ea1a7dc3a22dAffected
  • 98d187a989036096feaa2fef1ec3b2240ecdeacf to before d6077df7b75d26e4edf98983836c05d00ebabd8dAffected
LinuxLinux
  • 6.14Affected
  • before 6.14Not affected
  • 6.18.21 through 6.18.*Not affected
  • 6.19.11 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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