Bluetooth: hci_qca: Clear memdump state on invalid dump size

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68389
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:32 UTC
Updated2026-08-17 06:17:47 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Clear memdump state on invalid dump size qca_controller_memdump() allocates qca->qca_memdump before processing the first dump packet. For a sequence-zero packet it then disables IBS, marks memdump collection active, and reads the advertised dump size. If the controller reports a zero dump size, the error path frees the local qca_memdump object and returns without clearing qca->qca_memdump or undoing the collection state. A later memdump work item initializes its local pointer from qca->qca_memdump and skips allocation when that pointer is non-NULL, so it can operate on freed memory. The stale collection and IBS-disabled flags can also leave waiters or later transmit handling blocked behind an aborted dump. Clear the saved pointer and memdump state before returning from the invalid-size path, matching the cleanup used when hci_devcd_init() fails. A static analysis checker reported the stale memdump state, and manual source review confirmed the invalid-size failure path.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.002570000 probability, percentile 0.174850000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 06d3fdfcdf5cefb06f2024b9d3dad356779399cf 5a3945e8dea6c9a8ec9e981169ac9487e1d6ad6a git Not specified
CNA Linux Linux affected 06d3fdfcdf5cefb06f2024b9d3dad356779399cf 069258d5111eed9ac9586bee42d03d38e2975715 git Not specified
CNA Linux Linux affected 06d3fdfcdf5cefb06f2024b9d3dad356779399cf cefb44c367b2b52e50f97bc8526d39df9bcf5e60 git Not specified
CNA Linux Linux affected 06d3fdfcdf5cefb06f2024b9d3dad356779399cf 2363a757694752426fc47f3eadde15cf5f791fa5 git Not specified
CNA Linux Linux affected 06d3fdfcdf5cefb06f2024b9d3dad356779399cf bf587a10c33e5571a299742e45bc18960b9912e7 git Not specified
CNA Linux Linux affected 6.6 Not specified
CNA Linux Linux unaffected 6.6 semver Not specified
CNA Linux Linux unaffected 6.6.148 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.101 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cefb44c367b2b52e50f97bc8526d39df9bcf5e60 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/069258d5111eed9ac9586bee42d03d38e2975715 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5a3945e8dea6c9a8ec9e981169ac9487e1d6ad6a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bf587a10c33e5571a299742e45bc18960b9912e7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2363a757694752426fc47f3eadde15cf5f791fa5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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