CVE-2024-46706
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-46706
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-46706.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-46706
- Downstream
- Related
- Published
- 2024-09-13T06:27:33Z
- Modified
- 2025-10-17T11:45:58.035372Z
- Summary
- tty: serial: fsl_lpuart: mark last busy before uart_add_one_port
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
tty: serial: fsllpuart: mark last busy before uartaddoneport
With "earlycon initcall_debug=1 loglevel=8" in bootargs, kernel sometimes boot hang. It is because normal console still is not ready, but runtime suspend is called, so early console putchar will hang in waiting TRDE set in UARTSTAT.
The lpuart driver has auto suspend delay set to 3000ms, but during uartaddoneport, a child device serial ctrl will added and probed with its pm runtime enabled(see serialctrl.c). The runtime suspend call path is: deviceadd |-> busprobedevice |->deviceinitialprobe |->deviceattach |-> pmruntimegetsync(dev->parent); |-> pmrequestidle(dev); |-> pmruntime_put(dev->parent);
So in the end, before normal console ready, the lpuart get runtime suspended. And earlycon putchar will hang.
To address the issue, mark last busy just after pmruntimeenable, three seconds is long enough to switch from bootconsole to normal console.
- References
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
-
Introduced43543e6f539b3e646348c253059f75e27d63c94dFixed8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced43543e6f539b3e646348c253059f75e27d63c94dFixed3ecf625d4acb71d726bc0b49403cf68388b3d58d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced43543e6f539b3e646348c253059f75e27d63c94dFixeddc98d76a15bc29a9a4e76f2f65f39f3e590fb15c
Affected versions
v6.*
v6.1
v6.1-rc7
v6.1-rc8
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.10.1
v6.10.2
v6.10.3
v6.10.4
v6.10.5
v6.10.6
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.35
v6.6.36
v6.6.37
v6.6.38
v6.6.39
v6.6.4
v6.6.40
v6.6.41
v6.6.42
v6.6.43
v6.6.44
v6.6.45
v6.6.46
v6.6.47
v6.6.5
v6.6.6
v6.6.7
v6.6.8
v6.6.9
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7
Database specific
vanir_signatures
[
{
"signature_type": "Function",
"target": {
"function": "lpuart_probe",
"file": "drivers/tty/serial/fsl_lpuart.c"
},
"id": "CVE-2024-46706-0e016890",
"digest": {
"function_hash": "46972854630997292047325767070587569290",
"length": 3116.0
},
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c",
"deprecated": false
},
{
"signature_type": "Line",
"target": {
"file": "drivers/tty/serial/fsl_lpuart.c"
},
"id": "CVE-2024-46706-20dccabb",
"digest": {
"threshold": 0.9,
"line_hashes": [
"82122705016180149427985599594079160765",
"150869340206582130269526822765885498857",
"177910765597289190270751660989221811642",
"36465670338814829304875788901192087306"
]
},
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3ecf625d4acb71d726bc0b49403cf68388b3d58d",
"deprecated": false
},
{
"signature_type": "Line",
"target": {
"file": "drivers/tty/serial/fsl_lpuart.c"
},
"id": "CVE-2024-46706-57dfde0a",
"digest": {
"threshold": 0.9,
"line_hashes": [
"82122705016180149427985599594079160765",
"150869340206582130269526822765885498857",
"177910765597289190270751660989221811642",
"36465670338814829304875788901192087306"
]
},
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c",
"deprecated": false
},
{
"signature_type": "Line",
"target": {
"file": "drivers/tty/serial/fsl_lpuart.c"
},
"id": "CVE-2024-46706-80d5f8f5",
"digest": {
"threshold": 0.9,
"line_hashes": [
"82122705016180149427985599594079160765",
"150869340206582130269526822765885498857",
"177910765597289190270751660989221811642",
"36465670338814829304875788901192087306"
]
},
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68",
"deprecated": false
},
{
"signature_type": "Function",
"target": {
"function": "lpuart_probe",
"file": "drivers/tty/serial/fsl_lpuart.c"
},
"id": "CVE-2024-46706-9a502ac5",
"digest": {
"function_hash": "129126245416513563877323462425424744752",
"length": 3136.0
},
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68",
"deprecated": false
},
{
"signature_type": "Function",
"target": {
"function": "lpuart_probe",
"file": "drivers/tty/serial/fsl_lpuart.c"
},
"id": "CVE-2024-46706-a8f44601",
"digest": {
"function_hash": "46972854630997292047325767070587569290",
"length": 3116.0
},
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3ecf625d4acb71d726bc0b49403cf68388b3d58d",
"deprecated": false
}
]