CVE-2023-52768

Kernel memory corruption via undersized transmit table

Published May 21, 2024 · Updated Aug 5, 2026

An out-of-bounds write in the Linux wilc1000 Wi-Fi driver allows local users with high privileges to corrupt kernel memory during transmission. wilc_wlan_init allocates vmm_table without multiplying its entry count by the size of a 32-bit integer, while wilc_wlan_handle_txq indexes and writes it as an array. The flaw is reachable when the wilc1000 transmit path is active; successful triggering can corrupt kernel data or crash the system.

CVSS severity5.6
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

An out-of-bounds write in the Linux wilc1000 Wi-Fi driver allows local users with high privileges to corrupt kernel memory during transmission. wilc_wlan_init allocates vmm_table without multiplying its entry count by the size of a 32-bit integer, while wilc_wlan_handle_txq indexes and writes it as an array. The flaw is reachable when the wilc1000 transmit path is active; successful triggering can corrupt kernel data or crash the system.

The record

CVE
CVE-2023-52768
Published
May 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 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

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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=32dd0b22a5ba1dd296ccf2caf46ad44c3a8d5d98 <541b3757fd443a68ed8d25968eae511a8275e7c8
  2. Affected versionversion=40b717bfcefab28a0656b8caa5e43d5449e5a671 <05ac1a198a63ad66bf5ae8b7321407c102d40ef3
  3. Affected versionversion=40b717bfcefab28a0656b8caa5e43d5449e5a671 <3ce1c2c3999b232258f7aabab311d47dda75605c
  4. Affected versionversion=40b717bfcefab28a0656b8caa5e43d5449e5a671 <4b0d6ddb6466d10df878a7787f175a0e4adc3e27
  5. Affected versionversion=40b717bfcefab28a0656b8caa5e43d5449e5a671 <6aaf7cd8bdfe245d3c9a8b48fe70c2011965948e
  6. Affected versionversion=5.15.68 <5.15.140
  7. Affected versionversion=5.19.9 <5.20
  8. Affected versionversion=5212d958f6518003cd98c9886f8e8aedcfc25741
  9. Affected versionversion=6.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=32dd0b22a5ba1dd296ccf2caf46ad44c3a8d5d98 <541b3757fd443a68ed8d25968eae511a8275e7c8; version=40b717bfcefab28a0656b8caa5e43d5449e5a671 <05ac1a198a63ad66bf5ae8b7321407c102d40ef3; version=40b717bfcefab28a0656b8caa5e43d5449e5a671 <3ce1c2c3999b232258f7aabab311d47dda75605c; version=40b717bfcefab28a0656b8caa5e43d5449e5a671 <4b0d6ddb6466d10df878a7787f175a0e4adc3e27; version=40b717bfcefab28a0656b8caa5e43d5449e5a671 <6aaf7cd8bdfe245d3c9a8b48fe70c2011965948e; version=5.15.68 <5.15.140; version=5.19.9 <5.20; version=5212d958f6518003cd98c9886f8e8aedcfc25741; version=6.0

Published CVSS scores

5.6UbuntuCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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