DEBIAN-CVE-2021-47195

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Source
https://security-tracker.debian.org/tracker/CVE-2021-47195
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47195.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-47195
Upstream
Published
2024-04-10T19:15:47Z
Modified
2025-09-25T22:40:46Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: spi: fix use-after-free of the addlock mutex Commit 6098475d4cb4 ("spi: Fix deadlock when adding SPI controllers on SPI buses") introduced a per-controller mutex. But mutexunlock() of said lock is called after the controller is already freed: spiunregistercontroller(ctlr) -> putdevice(&ctlr->dev) -> spicontrollerrelease(dev) -> mutexunlock(&ctrl->addlock) Move the putdevice() after the mutex_unlock().

References

Affected packages

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
5.15.5-1

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
5.15.5-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / 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
5.15.5-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}