CVE-2022-49474
Bluetooth: fix dangling sco_conn and use-after-free in sco_sock_timeout
- Published
- Updated
- Reserved
- Assigned by
- Linux
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
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.28% · top 79% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 22c66af08230a7030bdb88accffaec3424695631 – < 9de3dc09e56f8deacd2bdbf4cecb71e11a312405
- affected 0115a66ebb44bd9127ccb58cf43ed23c795eb1f0 – < 7d61dbd7311ab978d8ddac1749a758de4de00374
- affected bc4b08383046f3282b6fa58cfcef05bd13e52b93 – < 390d82733a953c1fabf3de9c9618091a7a9c90a6
- affected 5ccb04c6e1fb7b97fa2e1785b67c3a1cb3527ef7 – < 6f55fac0af3531cf60d11369454c41f5fc81ab3f
- affected 059c2c09f4b7f97711d0d8eaa0b9877f5e7d0a75 – < 36c644c63bfcaee2d3a426f45e89a9cd09799318
- affected e1dee2c1de2b4dd00eb44004a4bda6326ed07b59 – < 65d347cb39e2e6bd0c2a745ad7c928998ebb0162
- affected e1dee2c1de2b4dd00eb44004a4bda6326ed07b59 – < 537f619dea4e3fa8ed1f8f938abffe3615794bcc
- affected e1dee2c1de2b4dd00eb44004a4bda6326ed07b59 – < 99df16007f4bbf9abfc3478cb17d10f0d7f8906e
- affected e1dee2c1de2b4dd00eb44004a4bda6326ed07b59 – < 7aa1e7d15f8a5b65f67bacb100d8fc033b21efa2
- affected 98ae477ed1540d3acbbf44d88ee237ad64275158
- affected f0c389e23e2475e5837716a629c81b7a9d90cc94
- affected 0b9da4bde0d59c61b3675bdd80a05a726beb875a
- affected 4.9.283 – < 4.9.318
- affected 4.14.247 – < 4.14.283
- affected 4.19.207 – < 4.19.247
- affected 5.4.146 – < 5.4.198
- affected 5.10.65 – < 5.10.121
- affected 4.4.284 – < 4.5
- affected 5.13.17 – < 5.14
- affected 5.14.4 – < 5.15
- affected 5.15
- unaffected < 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.*
- unaffected 5.10.121 – ≤ 5.10.*
- unaffected 5.15.46 – ≤ 5.15.*
- unaffected 5.17.14 – ≤ 5.17.*
- unaffected 5.18.3 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (9)
- https://git.kernel.org/stable/c/9de3dc09e56f8deacd2bdbf4cecb71e11a312405 (opens in a new tab)
- https://git.kernel.org/stable/c/7d61dbd7311ab978d8ddac1749a758de4de00374 (opens in a new tab)
- https://git.kernel.org/stable/c/390d82733a953c1fabf3de9c9618091a7a9c90a6 (opens in a new tab)
- https://git.kernel.org/stable/c/6f55fac0af3531cf60d11369454c41f5fc81ab3f (opens in a new tab)
- https://git.kernel.org/stable/c/36c644c63bfcaee2d3a426f45e89a9cd09799318 (opens in a new tab)
- https://git.kernel.org/stable/c/65d347cb39e2e6bd0c2a745ad7c928998ebb0162 (opens in a new tab)
- https://git.kernel.org/stable/c/537f619dea4e3fa8ed1f8f938abffe3615794bcc (opens in a new tab)
- https://git.kernel.org/stable/c/99df16007f4bbf9abfc3478cb17d10f0d7f8906e (opens in a new tab)
- https://git.kernel.org/stable/c/7aa1e7d15f8a5b65f67bacb100d8fc033b21efa2 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49474)Record last updated .