Bluetooth: serialize accept_q access (Linux Linux)

CVE-2026-52918
HIGH 8.8

At a glance

Source
NVD
EPSS
EPSS 0.22 % · percentile 12 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: serialize accept_q access bt_sock_poll() walks the accept queue without synchronization, while child teardown can unlink the same socket and drop its last reference. The unsynchronized accept queue walk has existed since the initial Bluetooth import. Protect accept_q with a dedicated lock for queue updates and polling. Also rework bt_accept_dequeue() to take temporary child references under the queue lock before dropping it and locking the child socket.

Weaknesses (CWE)

  • CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization

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 configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d9ce4de05df2385c19e2c7d12f529144e1a44af1 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 41c8c1c7923e86e0eb59cfb4279349112756a336 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4ec17782fd186f901a7329605d11048b085b945a ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < be43e6b4043113c3b3cf887c3c8350f67140274c ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 85f8674cae82053f1e6bab295f6a8422cca14db5 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8b4c412e001b0c670eb937beab491af974da55b3
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.10.259 ≤ 5.10.* ; unaffected 5.15.210 ≤ 5.15.* ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.142 ≤ 6.6.*

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