CVE-2021-47516

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-47516
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47516.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-47516
Related
Published
2024-05-24T15:15:13Z
Modified
2024-09-11T04:41:13.536792Z
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:

nfp: Fix memory leak in nfpcppareacacheadd()

In line 800 (#1), nfpcpparea_alloc() allocates and initializes a CPP area structure. But in line 807 (#2), when the cache is allocated failed, this CPP area structure is not freed, which will result in memory leak.

We can fix it by freeing the CPP area when the cache is allocated failed (#2).

792 int nfpcppareacacheadd(struct nfpcpp *cpp, sizet size) 793 { 794 struct nfpcppareacache *cache; 795 struct nfpcpp_area *area;

800 area = nfpcppareaalloc(cpp, NFPCPPID(7, NFPCPPACTIONRW, 0), 801 0, size); // #1: allocates and initializes

802 if (!area) 803 return -ENOMEM;

805 cache = kzalloc(sizeof(*cache), GFP_KERNEL); 806 if (!cache) 807 return -ENOMEM; // #2: missing free

817 return 0; 818 }

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
5.10.92-1

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

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
5.15.15-1

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
5.15.15-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}