CVE-2023-53094

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-53094
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53094.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-53094
Related
Published
2025-05-02T16:15:28Z
Modified
2025-05-05T22:59:15.293411Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

tty: serial: fsl_lpuart: fix race on RX DMA shutdown

From time to time DMA completion can come in the middle of DMA shutdown:

<process ctx>: <IRQ>: lpuart32shutdown() lpuartdmashutdown() deltimersync() lpuartdmarxcomplete() lpuartcopyrxtotty() modtimer() lpuartdmarxfree()

When the timer fires a bit later, sport->dmarxdesc is NULL:

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004 pc : lpuartcopyrxtotty+0xcc/0x5bc lr : lpuarttimerfunc+0x1c/0x2c Call trace: lpuartcopyrxtotty lpuarttimerfunc calltimerfn _runtimers.part.0 runtimersoftirq _dosoftirq _irqexitrcu irqexit handledomainirq gichandleirq callonirqstack dointerrupt_handler ...

To fix this fold deltimersync() into lpuartdmarxfree() after dmaengineterminatesync() to make sure timer will not be re-started in lpuartcopyrxtotty() <= lpuartdmarxcomplete().

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.178-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2
5.10.158-1
5.10.158-2
5.10.162-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}