CVE-2022-48872

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48872
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48872.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-48872
Related
Published
2024-08-21T07:15:04Z
Modified
2024-09-18T03:22:39.067037Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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

misc: fastrpc: Fix use-after-free race condition for maps

It is possible that in between calling fastrpcmapget() until map->fl->lock is taken in fastrpcfreemap(), another thread can call fastrpcmaplookup() and get a reference to a map that is about to be deleted.

Rewrite fastrpcmapget() to only increase the reference count of a map if it's non-zero. Propagate this to callers so they can know if a map is about to be deleted.

Fixes this warning: refcountt: addition on 0; use-after-free. WARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcountwarnsaturate ... Call trace: refcountwarnsaturate [fastrpcmapget inlined] [fastrpcmaplookup inlined] fastrpcmapcreate fastrpcinternalinvoke fastrpcdeviceioctl _arm64sysioctl invoke_syscall

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
6.1.8-1

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
6.1.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}