CVE-2022-49890

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49890
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49890.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49890
Related
Published
2025-05-01T15:16:14Z
Modified
2025-05-07T14:47:35.415179Z
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:

capabilities: fix potential memleak on error path from vfsgetxattralloc()

In capinodegetsecurity(), we will use vfsgetxattralloc() to complete the memory allocation of tmpbuf, if we have completed the memory allocation of tmpbuf, but failed to call handler->get(...), there will be a memleak in below logic:

|-- ret = (int)vfsgetxattralloc(mntuserns, ...) | /* ^^^ alloc for tmpbuf */ |-- value = krealloc(*xattrvalue, error + 1, flags) | /* ^^^ alloc memory / |-- error = handler->get(handler, ...) | / error! / |-- *xattr_value = value | / xattr_value is &tmpbuf (memory leak!) */

So we will try to free(tmpbuf) after vfsgetxattralloc() fails to fix it.

[PM: subject line and backtrace tweaks]

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
5.10.158-1

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

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
6.0.8-1

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
6.0.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}