CVE-2022-50837 - net: dsa: tag_8021q: avoid leaking ctx on dsa_tag_8021q_register() error path

net: dsa: tag_8021q: avoid leaking ctx on dsa_tag_8021q_register() error path

Published Dec 30, 2025

No CVSS score

EPSS 0.24%

Description

If dsa_tag_8021q_setup() fails, for example due to the inability of the device to install a VLAN, the tag_8021q context of the switch will leak. Make sure it is freed on the error path.

Affected products

Vendor Linux Product Linux Default
unaffected
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
Vendor Linux Product Linux Default
affected
- Version
  5.15
  Status
  affected
  Constraints
  -
- Version
  0
  Status
  unaffected
  Constraints
  <5.15
- Version
  5.15.86
  Status
  unaffected
  Constraints
  <=5.15.*
- Version
  6.0.16
  Status
  unaffected
  Constraints
  <=6.0.*
- Version
  6.1.2
  Status
  unaffected
  Constraints
  <=6.1.*
- Version
  6.2
  Status
  unaffected
  Constraints
  <=*

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Linux

unaffected

Version	Status	Constraints
	affected
	affected
	affected
	affected

Linux

affected

Version	Status	Constraints
5.15	affected	-
0	unaffected	<5.15
5.15.86	unaffected	<=5.15.*
6.0.16	unaffected	<=6.0.*
6.1.2	unaffected	<=6.1.*
6.2	unaffected	<=*

Red Hat Enterprise Linux 10

kernel

Not affected
Red Hat Enterprise Linux 6

kernel

Not affected
Red Hat Enterprise Linux 7

kernel

Not affected
Red Hat Enterprise Linux 7

kernel-rt

Not affected
Red Hat Enterprise Linux 8

kernel

Not affected
Red Hat Enterprise Linux 8

kernel-rt

Not affected
Red Hat Enterprise Linux 9

kernel

Not affected
Red Hat Enterprise Linux 9

kernel-rt

Not affected

Product	Package	State	Advisory
Red Hat Enterprise Linux 10	kernel	Not affected	n/a
Red Hat Enterprise Linux 6	kernel	Not affected	n/a
Red Hat Enterprise Linux 7	kernel	Not affected	n/a
Red Hat Enterprise Linux 7	kernel-rt	Not affected	n/a
Red Hat Enterprise Linux 8	kernel	Not affected	n/a
Red Hat Enterprise Linux 8	kernel-rt	Not affected	n/a
Red Hat Enterprise Linux 9	kernel	Not affected	n/a
Red Hat Enterprise Linux 9	kernel-rt	Not affected	n/a

Remediation

No remediation recorded yet.

Weaknesses (0)

No CWE recorded.

References (10)

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2022-50837		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2426207		Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-55861		Advisory
https://git.kernel.org/stable/c/09f30f394e832ed09859b6a80fdd20668a9104ff
https://git.kernel.org/stable/c/14ed46a13aba42a6ddd85de6f6274090df3586a5
https://git.kernel.org/stable/c/39691d51af99f80efb9e365f94b8e0c791fa1a2f
https://git.kernel.org/stable/c/e095493091e850d5292ad01d8fbf5cde1d89ac53
https://lore.kernel.org/linux-cve-announce/2025123018-CVE-2022-50837-c470@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-50837
https://www.cve.org/CVERecord?id=CVE-2022-50837