CVE-2022-49853

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49853
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49853.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49853
Downstream
Related
Published
2025-05-01T15:16:08Z
Modified
2025-07-29T10:47:00.077372Z
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:

net: macvlan: fix memory leaks of macvlancommonnewlink

kmemleak reports memory leaks in macvlancommonnewlink, as follows:

ip link add link eth0 name .. type macvlan mode source macaddr add <MAC-ADDR>

kmemleak reports:

unreferenced object 0xffff8880109bb140 (size 64): comm "ip", pid 284, jiffies 4294986150 (age 430.108s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 b8 aa 5a 12 80 88 ff ff ..........Z..... 80 1b fa 0d 80 88 ff ff 1e ff ac af c7 c1 6b 6b ..............kk backtrace: [<ffffffff813e06a7>] kmemcachealloctrace+0x1c7/0x300 [<ffffffff81b66025>] macvlanhashaddsource+0x45/0xc0 [<ffffffff81b66a67>] macvlanchangelinksources+0xd7/0x170 [<ffffffff81b6775c>] macvlancommonnewlink+0x38c/0x5a0 [<ffffffff81b6797e>] macvlannewlink+0xe/0x20 [<ffffffff81d97f8f>] _rtnlnewlink+0x7af/0xa50 [<ffffffff81d98278>] rtnlnewlink+0x48/0x70 ...

In the scenario where the macvlan mode is configured as 'source', macvlanchangelinksources() will be execured to reconfigure list of remote source mac addresses, at the same time, if registernetdevice() return an error, the resource generated by macvlanchangelink_sources() is not cleaned up.

Using this patch, in the case of an error, it will execute macvlanflushsources() to ensure that the resource is cleaned up.

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
6.0.10-1

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
6.0.10-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}