Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once (Linux Linux)

CVE-2025-40318
HIGH 8.8

At a glance

Source
NVD
EPSS
EPSS 0.27 % · percentile 19 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once hci_cmd_sync_dequeue_once() does lookup and then cancel the entry under two separate lock sections. Meanwhile, hci_cmd_sync_work() can also delete the same entry, leading to double list_del() and "UAF". Fix this by holding cmd_sync_work_lock across both lookup and cancel, so that the entry cannot be removed concurrently.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected f00f36db76eb8fd10d13e80e2590f23b5beaa54d < 0a94f7e017438935c09ef833a1aa908ad9875213 ; affected 1499f79995c7ee58e3bfeeff75f6d1b37dcda881 < 932c0a4f77ac13e526fdd5b42914d29c9821d389 ; affected 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 < ae76cf6c2c842944c6514c57df54d728f1916553 ; affected 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 < 9cd536970192b72257afcdfba0bfc09993e6f19c ; affected 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 < 09b0cd1297b4dbfe736aeaa0ceeab2265f47f772 ; affected 357603f4d396d85fbf0045512efaf1d7f7394ed7
Linux · Linuxaffected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.1.159 ≤ 6.1.* ; unaffected 6.6.117 ≤ 6.6.* ; unaffected 6.12.58 ≤ 6.12.* ; unaffected 6.17.8 ≤ 6.17.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD