dmaengine: Fix possible use after free

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72476
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:21 UTC
Updated2026-08-17 06:19:15 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: dmaengine: Fix possible use after free In dma_release_channel(), check chan->device->privatecnt after call dma_chan_put(). However, dma_chan_put() call dma_device_put() which could release the last reference of the device if the DMA provider is already gone and hence free it. Fixes it by moving dma_chan_put() after the check.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001710000 probability, percentile 0.068280000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 444f96066937f3fdf0e79b53289cff223c7d638b git Not specified
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 ab438a9efb9042c79d2f8db28a326d55feb8591f git Not specified
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce git Not specified
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 5876f38b67a309c00628942cb25679749b53b397 git Not specified
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 3b0240483dc977dbec4f3bc7a5383d4691ecb625 git Not specified
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 329ec20a86091d2a6e5b4fe507545e7d678a22a2 git Not specified
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 0bc191050c3253da8ef4bfaf157c44efed6e22cd git Not specified
CNA Linux Linux affected 0f571515c332e00b3515dbe0859ceaa30ab66e00 92f853f0645aebf1d05d333e97ab7c342ace1892 git Not specified
CNA Linux Linux affected 2.6.30 Not specified
CNA Linux Linux unaffected 2.6.30 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/444f96066937f3fdf0e79b53289cff223c7d638b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ab438a9efb9042c79d2f8db28a326d55feb8591f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/329ec20a86091d2a6e5b4fe507545e7d678a22a2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0bc191050c3253da8ef4bfaf157c44efed6e22cd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3b0240483dc977dbec4f3bc7a5383d4691ecb625 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/92f853f0645aebf1d05d333e97ab7c342ace1892 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5876f38b67a309c00628942cb25679749b53b397 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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