CVE-2022-28356

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.58% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 47.6% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-04-02 20:36Z4 YR AGO

Last updated

2025-05-05 16:22Z1 YR AGO

Reserved

2022-04-02

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

No CWE assigned

Data version

5.1

Document digest

748c249149dea4d8e4c43296756682e98784960229901d371d65114b2b32a286

• github.comhttps://github.com/torvalds/linux/commit/764f4eb6846f5475f1244767d24d25dd86528a4ax_refsource_MISC
• cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.1x_refsource_MISC
• www.openwall.com[oss-security] 20220406 CVE-2022-28356: Linux kernel: refcount leak in llc_ui_bind and llc_ui_autobindhttp://www.openwall.com/lists/oss-security/2022/04/06/1mailing-listx_refsource_MLIST
• www.debian.orgDSA-5127https://www.debian.org/security/2022/dsa-5127vendor-advisoryx_refsource_DEBIAN
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20220506-0006/x_refsource_CONFIRM
• lists.debian.org[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlmailing-listx_refsource_MLIST
• www.debian.orgDSA-5173https://www.debian.org/security/2022/dsa-5173vendor-advisoryx_refsource_DEBIAN