CVE-2022-49102

Service interruption via incorrect MMU shadow check

Published Feb 26, 2025 · Updated Aug 12, 2026

Memory leak in Linux 5.11 through 5.15.33, 5.16 through 5.16.19, and 5.17 through 5.17.2 allows local users to interrupt service. The hl_mmu_v1_fini function checks the host-resident shadow pointer before freeing the device-resident shadow and its page-table pool, so a null host-resident shadow skips both releases. Reachability requires low-privilege local access to a system using the habanalabs driver; repeated device teardown can deplete kernel memory and interrupt service.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Linux 5.11 through 5.15.33, 5.16 through 5.16.19, and 5.17 through 5.17.2 allows local users to interrupt service. The hl_mmu_v1_fini function checks the host-resident shadow pointer before freeing the device-resident shadow and its page-table pool, so a null host-resident shadow skips both releases. Reachability requires low-privilege local access to a system using the habanalabs driver; repeated device teardown can deplete kernel memory and interrupt service.

The record

CVE
CVE-2022-49102
Published
Feb 26, 2025
Updated
Aug 12, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.11
  2. Affected versionversion=aa6df6533b8f9ead98889baa92e2b19793b1c77e <12e49aefda2e04b07604f13e03f40027cbeb0dc6
  3. Affected versionversion=aa6df6533b8f9ead98889baa92e2b19793b1c77e <30058d3a83cfe8c6aacbfe5ab13c01dd0c1799e3
  4. Affected versionversion=aa6df6533b8f9ead98889baa92e2b19793b1c77e <6d421fb7a9eddd8ce0a05641a3db97283fe20699
  5. Affected versionversion=aa6df6533b8f9ead98889baa92e2b19793b1c77e <eb85eec858c1a5c11d3a0bff403f6440b05b40dc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.11; version=aa6df6533b8f9ead98889baa92e2b19793b1c77e <12e49aefda2e04b07604f13e03f40027cbeb0dc6; version=aa6df6533b8f9ead98889baa92e2b19793b1c77e <30058d3a83cfe8c6aacbfe5ab13c01dd0c1799e3; version=aa6df6533b8f9ead98889baa92e2b19793b1c77e <6d421fb7a9eddd8ce0a05641a3db97283fe20699; version=aa6df6533b8f9ead98889baa92e2b19793b1c77e <eb85eec858c1a5c11d3a0bff403f6440b05b40dc

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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