CVE-2022-50874 - RDMA/erdma: Fix refcount leak in erdma_mmap

RDMA/erdma: Fix refcount leak in erdma_mmap

Published Dec 30, 2025

No CVSS score

EPSS 0.20%

Description

rdma_user_mmap_entry_get() take reference, we should release it when not need anymore, add the missing rdma_user_mmap_entry_put() in the error path to fix it.

Affected products

Vendor Linux Product Linux Default
unaffected
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
Vendor Linux Product Linux Default
affected
- Version
  6.0
  Status
  affected
  Constraints
  -
- Version
  0
  Status
  unaffected
  Constraints
  <6.0
- Version
  6.1.16
  Status
  unaffected
  Constraints
  <=6.1.*
- Version
  6.2.3
  Status
  unaffected
  Constraints
  <=6.2.*
- Version
  6.3
  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

Linux

affected

Version	Status	Constraints
6.0	affected	-
0	unaffected	<6.0
6.1.16	unaffected	<=6.1.*
6.2.3	unaffected	<=6.2.*
6.3	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 (9)

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2022-50874		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2426147		Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-55922		Advisory
https://git.kernel.org/stable/c/410f0f46ffca4d0102470c1e0c747ecfece4204c
https://git.kernel.org/stable/c/8372207b009d6abdd60bb05624640bd86386599f
https://git.kernel.org/stable/c/ee84146c05ad2316b9a7222d0ec4413e0bf30eeb
https://lore.kernel.org/linux-cve-announce/2025123022-CVE-2022-50874-bd1d@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-50874
https://www.cve.org/CVERecord?id=CVE-2022-50874