serial: mxs-auart: add spinlock around changing cts state
In the Linux kernel, the following vulnerability has been resolved: serial: mxs-auart: add spinlock around changing cts state The uart_handle_cts_change() function in serial_core expects the caller to hold uport->lock. For example, I have seen the below kernel splat, when the Bluetooth driver is loaded on an i.MX28 board. [ 85.119255] ------------[ cut here ]------------ [ 85.124413] WARNING: CPU: 0 PID: 27 at /drivers/tty/serial/serial_core.c:3453 uart_handle_cts_change+0xb4/0xec [ 85.134694] Modules linked in: hci_uart bluetooth ecdh_generic ecc wlcore_sdio configfs [ 85.143314] CPU: 0 PID: 27 Comm: kworker/u3:0 Not tainted 6.6.3-00021-gd62a2f068f92 #1 [ 85.151396] Hardware name: Freescale MXS (Device Tree) [ 85.156679] Workqueue: hci0 hci_power_on [bluetooth] (...) [ 85.191765] uart_handle_cts_change from mxs_auart_irq_handle+0x380/0x3f4 [ 85.198787] mxs_auart_irq_handle from __handle_irq_event_percpu+0x88/0x210 (...)
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.19.313, 5.10.216, 5.15.158, 5.4.275, 6.1.88, 6.6.29, 6.8.8
- CVEs
- CVE-2024-27000
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 04:25 UTC · Revision 1
Source evidence
serial: mxs-auart: add spinlock around changing cts state
core-osv · Original sourcePublished 1 May 2024, 05:28 UTC
In the Linux kernel, the following vulnerability has been resolved: serial: mxs-auart: add spinlock around changing cts state The uart_handle_cts_change() function in serial_core expects the caller to hold uport->lock. For example, I have seen the below kernel splat, when the Bluetooth driver is loaded on an i.MX28 board. [ 85.119255] ------------[ cut here ]------------ [ 85.124413] WARNING: CPU: 0 PID: 27 at /drivers/tty/serial/serial_core.c:3453 uart_handle_cts_change+0xb4/0xec [ 85.134694] Modules linked in: hci_uart bluetooth ecdh_generic ecc wlcore_sdio configfs [ 85.143314] CPU: 0 PID: 27 Comm: kworker/u3:0 Not tainted 6.6.3-00021-gd62a2f068f92 #1 [ 85.151396] Hardware name: Freescale MXS (Device Tree) [ 85.156679] Workqueue: hci0 hci_power_on [bluetooth] (...) [ 85.191765] uart_handle_cts_change from mxs_auart_irq_handle+0x380/0x3f4 [ 85.198787] mxs_auart_irq_handle from __handle_irq_event_percpu+0x88/0x210 (...)
osv:CVE-2024-27000
Kernel
Fixed versions: 4.19.313, 5.4.275, 5.10.216, 5.15.158, 6.1.88, 6.6.29, 6.8.8
Complete source record
{
"id": "9afde62e5383569ce269bc42fef4030671e8f393df6720fc007a2dc04150e174",
"url": "https://osv.dev/vulnerability/CVE-2024-27000",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "serial: mxs-auart: add spinlock around changing cts state",
"summary": "In the Linux kernel, the following vulnerability has been resolved: serial: mxs-auart: add spinlock around changing cts state The uart_handle_cts_change() function in serial_core expects the caller to hold uport->lock. For example, I have seen the below kernel splat, when the Bluetooth driver is loaded on an i.MX28 board. [ 85.119255] ------------[ cut here ]------------ [ 85.124413] WARNING: CPU: 0 PID: 27 at /drivers/tty/serial/serial_core.c:3453 uart_handle_cts_change+0xb4/0xec [ 85.134694] Modules linked in: hci_uart bluetooth ecdh_generic ecc wlcore_sdio configfs [ 85.143314] CPU: 0 PID: 27 Comm: kworker/u3:0 Not tainted 6.6.3-00021-gd62a2f068f92 #1 [ 85.151396] Hardware name: Freescale MXS (Device Tree) [ 85.156679] Workqueue: hci0 hci_power_on [bluetooth] (...) [ 85.191765] uart_handle_cts_change from mxs_auart_irq_handle+0x380/0x3f4 [ 85.198787] mxs_auart_irq_handle from __handle_irq_event_percpu+0x88/0x210 (...)",
"evidence": "osv:CVE-2024-27000",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.19.313",
"evidence": "/affected/1/ranges"
},
{
"value": "5.4.275",
"evidence": "/affected/1/ranges"
},
{
"value": "5.10.216",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.158",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.88",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.29",
"evidence": "/affected/1/ranges"
},
{
"value": "6.8.8",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2024-27000",
"aliases": [
"CVE-2024-27000"
],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "4d90bb147ef6b91f529a21b498ff2b5fdc6785b4"
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{
"fixed": "56434e295bd446142025913bfdf1587f5e1970ad"
},
{
"fixed": "21535ef0ac1945080198fe3e4347ea498205c99a"
},
{
"fixed": "0dc0637e6b16158af85945425821bfd0151adb37"
},
{
"fixed": "479244d68f5d94f3903eced52b093c1e01ddb495"
},
{
"fixed": "2c9b943e9924cf1269e44289bc5e60e51b0f5270"
},
{
"fixed": "5f40fd6ca2cf0bfbc5a5c9e403dfce8ca899ba37"
},
{
"fixed": "94b0e65c75f4af888ab2dd6c90f060f762924e86"
},
{
"fixed": "54c4ec5f8c471b7c1137a1f769648549c423c026"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27000.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.18.0"
},
{
"fixed": "4.19.313"
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{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.20.0"
},
{
"fixed": "5.4.275"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.5.0"
},
{
"fixed": "5.10.216"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.158"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "6.1.88"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
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{
"fixed": "6.6.29"
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{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
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{
"fixed": "6.8.8"
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}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27000.json"
}
}
],
"modified": "2026-10-28T02:30:42.653836043Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/0dc0637e6b16158af85945425821bfd0151adb37",
"https://git.kernel.org/stable/c/21535ef0ac1945080198fe3e4347ea498205c99a",
"https://git.kernel.org/stable/c/2c9b943e9924cf1269e44289bc5e60e51b0f5270",
"https://git.kernel.org/stable/c/479244d68f5d94f3903eced52b093c1e01ddb495",
"https://git.kernel.org/stable/c/54c4ec5f8c471b7c1137a1f769648549c423c026",
"https://git.kernel.org/stable/c/56434e295bd446142025913bfdf1587f5e1970ad",
"https://git.kernel.org/stable/c/5f40fd6ca2cf0bfbc5a5c9e403dfce8ca899ba37",
"https://git.kernel.org/stable/c/94b0e65c75f4af888ab2dd6c90f060f762924e86",
"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27000.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-27000",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27000.json"
}
},
"related_cves": [
{
"value": "CVE-2024-27000",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 510220,
"published_at": "2024-05-01T05:28:35.749+00:00"
}