DEBIAN-CVE-2021-4454

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Source
https://security-tracker.debian.org/tracker/CVE-2021-4454
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-4454.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-4454
Upstream
Published
2025-03-27T17:15:35Z
Modified
2025-09-19T07:31:53.757547Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: can: j1939: fix errant WARNONONCE in j1939sessiondeactivate The conclusion "j1939sessiondeactivate() should be called with a session ref-count of at least 2" is incorrect. In some concurrent scenarios, j1939sessiondeactivate can be called with the session ref-count less than 2. But there is not any problem because it will check the session active state before session putting in j1939sessiondeactivatelocked(). Here is the concurrent scenario of the problem reported by syzbot and my reproduction log. cpu0 cpu1 j1939xtprxeoma j1939xtprxabortone j1939sessiongetbyaddr [kref == 2] j1939sessiongetbyaddr [kref == 3] j1939sessiondeactivate [kref == 2] j1939sessionput [kref == 1] j1939sessioncompleted j1939sessiondeactivate WARNONONCE(kref < 2) ===================================================== WARNING: CPU: 1 PID: 21 at net/can/j1939/transport.c:1088 j1939sessiondeactivate+0x5f/0x70 CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 5.14.0-rc7+ #32 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014 RIP: 0010:j1939sessiondeactivate+0x5f/0x70 Call Trace: j1939sessiondeactivateactivatenext+0x11/0x28 j1939xtprxeoma+0x12a/0x180 j1939tprecv+0x4a2/0x510 j1939canrecv+0x226/0x380 canrcvfilter+0xf8/0x220 canreceive+0x102/0x220 ? processbacklog+0xf0/0x2c0 canrcv+0x53/0xf0 _netifreceiveskbonecore+0x67/0x90 ? processbacklog+0x97/0x2c0 _netifreceive_skb+0x22/0x80

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
6.1.11-1

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
6.1.11-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / 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
6.1.11-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}