CVE-2022-49474
Bluetooth: fix dangling sco_conn and use-after-free in sco_sock_timeout
At a glance
- Source
- NVD
- EPSS
- EPSS 0.28 % · percentile 21 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix dangling sco_conn and use-after-free in sco_sock_timeout Connecting the same socket twice consecutively in sco_sock_connect() could lead to a race condition where two sco_conn objects are created but only one is associated with the socket. If the socket is closed before the SCO connection is established, the timer associated with the dangling sco_conn object won't be canceled. As the sock object is being freed, the use-after-free problem happens when the timer callback function sco_sock_timeout() accesses the socket. Here's the call trace: dump_stack+0x107/0x163 ? refcount_inc+0x1c/ print_address_description.constprop.0+0x1c/0x47e ? refcount_inc+0x1c/0x7b kasan_report+0x13a/0x173 ? refcount_inc+0x1c/0x7b check_memory_region+0x132/0x139 refcount_inc+0x1c/0x7b sco_sock_timeout+0xb2/0x1ba process_one_work+0x739/0xbd1 ? cancel_delayed_work+0x13f/0x13f ? __raw_spin_lock_init+0xf0/0xf0 ? to_kthread+0x59/0x85 worker_thread+0x593/0x70e kthread+0x346/0x35a ? drain_workqueue+0x31a/0x31a ? kthread_bind+0x4b/0x4b ret_from_fork+0x1f/0x30
Weaknesses (CWE)
- CWE-416 — Use After Free
References
- https://git.kernel.org/stable/c/9de3dc09e56f8deacd2bdbf4cecb71e11a312405
- https://git.kernel.org/stable/c/7d61dbd7311ab978d8ddac1749a758de4de00374
- https://git.kernel.org/stable/c/390d82733a953c1fabf3de9c9618091a7a9c90a6
- https://git.kernel.org/stable/c/6f55fac0af3531cf60d11369454c41f5fc81ab3f
- https://git.kernel.org/stable/c/36c644c63bfcaee2d3a426f45e89a9cd09799318
- https://git.kernel.org/stable/c/65d347cb39e2e6bd0c2a745ad7c928998ebb0162
- https://git.kernel.org/stable/c/537f619dea4e3fa8ed1f8f938abffe3615794bcc
- https://git.kernel.org/stable/c/99df16007f4bbf9abfc3478cb17d10f0d7f8906e
- https://git.kernel.org/stable/c/7aa1e7d15f8a5b65f67bacb100d8fc033b21efa2
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2022-54755
- GCVE · GCVE-0-2022-49474
CERT-FR advisories
- CERTFR-2025-AVI-0529 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0336 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0307 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0252 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.4.284 < 4.5cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.9.238 < 4.9.318cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.14.247 < 4.14.283cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19.207 < 4.19.247cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.4.146 < 5.4.198cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.10.65 < 5.10.121cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.13.17 < 5.14cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.14.4 < 5.15.46cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.17.14cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.18 < 5.18.3
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 22c66af08230a7030bdb88accffaec3424695631 < 9de3dc09e56f8deacd2bdbf4cecb71e11a312405 ; affected 0115a66ebb44bd9127ccb58cf43ed23c795eb1f0 < 7d61dbd7311ab978d8ddac1749a758de4de00374 ; affected bc4b08383046f3282b6fa58cfcef05bd13e52b93 < 390d82733a953c1fabf3de9c9618091a7a9c90a6 ; affected 5ccb04c6e1fb7b97fa2e1785b67c3a1cb3527ef7 < 6f55fac0af3531cf60d11369454c41f5fc81ab3f ; affected 059c2c09f4b7f97711d0d8eaa0b9877f5e7d0a75 < 36c644c63bfcaee2d3a426f45e89a9cd09799318 ; affected e1dee2c1de2b4dd00eb44004a4bda6326ed07b59 < 65d347cb39e2e6bd0c2a745ad7c928998ebb0162 |
| Linux · Linux | affected 5.15 ; unaffected 0 < 5.15 ; unaffected 4.9.318 ≤ 4.9.* ; unaffected 4.14.283 ≤ 4.14.* ; unaffected 4.19.247 ≤ 4.19.* ; unaffected 5.4.198 ≤ 5.4.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |