CVE-2022-49023

Kernel over-read via short vendor elements

Published Oct 21, 2024 · Updated Aug 5, 2026

Buffer over-read in cfg80211 in the Linux kernel allows local users to trigger an out-of-bounds comparison via short Wi-Fi vendor elements. The cfg80211_gen_new_ie function in net/wireless/scan.c compares five bytes after each element header without first requiring both vendor-element payload lengths to contain five bytes. Low-privilege local access is required; the operation reads beyond an element boundary, but public sources do not establish a crash or code execution.

CVSS severity7.8
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Buffer over-read in cfg80211 in the Linux kernel allows local users to trigger an out-of-bounds comparison via short Wi-Fi vendor elements. The cfg80211_gen_new_ie function in net/wireless/scan.c compares five bytes after each element header without first requiring both vendor-element payload lengths to contain five bytes. Low-privilege local access is required; the operation reads beyond an element boundary, but public sources do not establish a crash or code execution.

The record

CVE
CVE-2022-49023
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <391cb872553627bdcf236c03ee7d5adb275e37e1
  2. Affected versionversion=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <88a6fe3707888bd1893e9741157a7035c4159ab6
  3. Affected versionversion=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <9e6b79a3cd17620d467311b30d56f2648f6880aa
  4. Affected versionversion=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <9f16b5c82a025cd4c864737409234ddc44fb166a
  5. Affected versionversion=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <f5c2ec288a865dbe3706b09bed12302e9f6d696b
  6. Affected versionversion=5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <391cb872553627bdcf236c03ee7d5adb275e37e1; version=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <88a6fe3707888bd1893e9741157a7035c4159ab6; version=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <9e6b79a3cd17620d467311b30d56f2648f6880aa; version=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <9f16b5c82a025cd4c864737409234ddc44fb166a; version=0b8fb8235be8be99a197e8d948fc0a2df8dc261a <f5c2ec288a865dbe3706b09bed12302e9f6d696b; version=5.1

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8SUSECVSS:3.1/AV:L/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo