CVE-2022-49549

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49549
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49549.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49549
Related
Published
2025-02-26T07:01:30Z
Modified
2025-03-10T22:53:03.530823Z
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:

x86/MCE/AMD: Fix memory leak when thresholdcreatebank() fails

In mcethresholdcreatedevice(), if thresholdcreatebank() fails, the previously allocated threshold banks array @bp will be leaked because the call to mcethresholdremovedevice() will not free it.

This happens because mcethresholdremovedevice() fetches the pointer through the thresholdbanks per-CPU variable but bp is written there only after the bank creation is successful, and not before, when thresholdcreatebank() fails.

Add a helper which unwinds all the bank creation work previously done and pass into it the previously allocated threshold banks array for freeing.

[ bp: Massage. ]

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
5.10.127-1

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

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
5.18.5-1

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
5.18.5-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}