CVE-2022-49131

Kernel panic via stale NAPI registration

Published Feb 26, 2025 · Updated May 11, 2026

Denial of service in the ath11k AHB driver in Linux allows local users to crash the kernel by repeatedly reloading the module. ath11k_ahb_free_ext_irq releases interrupts without calling netif_napi_del, leaving a stale NAPI registration that netif_napi_add later traverses. Reaching the fault requires local module-management privileges and compatible IPQ8074 AHB Wi-Fi hardware; the reported consequence is a kernel panic, not data access or modification.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the ath11k AHB driver in Linux allows local users to crash the kernel by repeatedly reloading the module. ath11k_ahb_free_ext_irq releases interrupts without calling netif_napi_del, leaving a stale NAPI registration that netif_napi_add later traverses. Reaching the fault requires local module-management privileges and compatible IPQ8074 AHB Wi-Fi hardware; the reported consequence is a kernel panic, not data access or modification.

The record

CVE
CVE-2022-49131
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.6
  2. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <22b59cb965f79ee1accf83172441c9ca0ecb632a
  3. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <38e488db194dc16d2eb23c77c6a8c04ff583c40d
  4. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <699e8c87e5c406af0f0606f40eeebd248c51b702
  5. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <c4b7653af62a9a5efe2856183d1f987c5429758b
  6. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <c6a815f5abdf324108799829dd19ea62fef4bf95

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=d5c65159f2895379e11ca13f62feabe93278985d <22b59cb965f79ee1accf83172441c9ca0ecb632a; version=d5c65159f2895379e11ca13f62feabe93278985d <38e488db194dc16d2eb23c77c6a8c04ff583c40d; version=d5c65159f2895379e11ca13f62feabe93278985d <699e8c87e5c406af0f0606f40eeebd248c51b702; version=d5c65159f2895379e11ca13f62feabe93278985d <c4b7653af62a9a5efe2856183d1f987c5429758b; version=d5c65159f2895379e11ca13f62feabe93278985d <c6a815f5abdf324108799829dd19ea62fef4bf95

Published CVSS scores

5.5OSVCVSS: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

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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