CVE-2026-90092
- Source
- https://cve.org/CVERecord?id=CVE-2026-90092
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90092.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-90092
- Downstream
- Related
- Published
- 2026-09-17T16:06:06Z
- Modified
- 2026-10-08T02:52:24Z
- Severity
-
- 8.0 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN
New sk should not be added to parent socket accept queue after last l2cap_sock_cleanup_listen() has run in l2cap_sock_teardown_cb() and state set to BT_CLOSED, as that can result to UAF on dereferencing the dangling parent reference.
l2cap_sock_new_connection_cb() may race with parent l2cap_chan teardown, due to chan->state accessed without consistent locking:
[Task 1] [Task 2] l2cap_sock_release(parent) l2cap_connect l2cap_sock_shutdown pchan = l2cap_global_chan_by_psm l2cap_chan_lock(pchan) l2cap_chan_close l2cap_sock_teardown_cb pchan->state = BT_CLOSED l2cap_chan_unlock(pchan) ------> l2cap_chan_lock(pchan) l2cap_new_connection l2cap_sock_new_connection_cb l2cap_chan_lock(pchan) <-------- l2cap_chan_unlock(pchan) l2cap_sock_kill(parent) /* bt_sk(sk)->parent dangling */
Fix by adding check for sk_state == BT_LISTEN after acquiring sk lock in l2cap_sock_new_connection_cb(). Add lock_sock() around sk_state writes where missing, to avoid data races.
Although the data races on pchan->state should be fixed too, this defensive sk_state check probably makes sense in any case.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90092.json" }- References
-
- https://git.kernel.org/stable/c/2a3a27aaf19bf069720e024ce6fde54e6bf80df9
- https://git.kernel.org/stable/c/491e4c60017969b053888029998d2a61f298986a
- https://git.kernel.org/stable/c/87276dc15b559d32757a43b4415c8445fbae06c4
- https://git.kernel.org/stable/c/bf61a65c6093970e3b50031c4b79ebf3bd411eba
- https://git.kernel.org/stable/c/c47339e169bf4a0a4cfabb91351471f67744c2bc
- https://git.kernel.org/stable/c/d4bfa78fd67929b62b02013c107973e0c5b7aa9a
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90092.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-90092
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0c17c8832562b2aac288e89cefd0f46074f54bcbFixedbf61a65c6093970e3b50031c4b79ebf3bd411eba
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5105f3e6b2df619c635b5f6a49fac131a36c7952Fixed491e4c60017969b053888029998d2a61f298986a
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc88c185ae0a1067823661b220aeea613df2c127bFixed2a3a27aaf19bf069720e024ce6fde54e6bf80df9
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1810e42ff6716f320c7269d5850eca48b07b7427Fixed87276dc15b559d32757a43b4415c8445fbae06c4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced2ff1a41a912de8517b4482e946dd951b7d80edbfFixedc47339e169bf4a0a4cfabb91351471f67744c2bcFixedd4bfa78fd67929b62b02013c107973e0c5b7aa9a
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.1.175Fixed6.1.188
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.140Fixed6.6.157
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.88Fixed6.12.110
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.18.30Fixed6.18.52
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.10.258Fixed5.11
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.15.209Fixed5.16
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7.0.7Fixed7.1
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1b1c0da227bf63479bac9982fc8d12df9aaea0fb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced85426e97dc72f2088ba6d27e74cd58c3fbd43e31
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda2dcf1a61d056aef15b63c6eae9441344d624389
Affected versions
v5.*
v6.*
v7.*
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed6.1.188
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.157
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.12.110
- Type
- ECOSYSTEM
- Events
-
Introduced6.13.0Fixed6.18.52
- Type
- ECOSYSTEM
- Events
-
Introduced6.19.0Fixed7.2.6