CVE-2022-50732

Adjacent kernel memory corruption via freed packet dereference

Published Dec 24, 2025 · Updated Dec 24, 2025

Use-after-free in the Linux kernel rtl8192u receive path allows adjacent attackers to corrupt kernel memory via injected Wi-Fi frames. ieee80211_monitor_rx passes the skb to netif_rx, which can free it, before ieee80211_rx reads skb->len through the stale pointer. Exploitation requires an RTL8192U adapter already in monitor mode; the stale access enables kernel-memory disclosure or corruption and a host crash.

CVSS severity8.8
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel rtl8192u receive path allows adjacent attackers to corrupt kernel memory via injected Wi-Fi frames. ieee80211_monitor_rx passes the skb to netif_rx, which can free it, before ieee80211_rx reads skb->len through the stale pointer. Exploitation requires an RTL8192U adapter already in monitor mode; the stale access enables kernel-memory disclosure or corruption and a host crash.

The record

CVE
CVE-2022-50732
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record 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=2.6.33
  2. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <288ada16a93aab5aa2ebea8190aafdb35b716854
  3. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6
  4. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <9c03db0ec84b7964a11b20706665c99a5fead332
  5. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <a0df8d44b555ae09729d6533fd4532977563c7b9
  6. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <b0aaec894a909c88117c8bda6c7c9b26cf7c744b
  7. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac
  8. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <daa8045a991363ccdae5615d170f35aa1135e7a7
  9. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <de174163c0d319ff06d622e79130a0017c8f5a6e
  10. Affected versionversion=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.33; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <288ada16a93aab5aa2ebea8190aafdb35b716854; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <9c03db0ec84b7964a11b20706665c99a5fead332; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <a0df8d44b555ae09729d6533fd4532977563c7b9; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <b0aaec894a909c88117c8bda6c7c9b26cf7c744b; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <daa8045a991363ccdae5615d170f35aa1135e7a7; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <de174163c0d319ff06d622e79130a0017c8f5a6e; version=8fc8598e61f6f384f3eaf1d9b09500c12af47b37 <fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd

Published CVSS scores

8.8Linux Kernel CVE TeamCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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