CVE-2023-52578

Network statistics corruption via unsynchronized bridge updates

Published Mar 2, 2024 · Updated May 11, 2026

Race condition in the Linux kernel bridge subsystem allows local users to corrupt interface statistics through concurrent packet processing. The br_handle_frame_finish function updates shared rx_packets, rx_bytes, and tx_dropped fields from multiple CPUs without mutual exclusion or SMP-safe DEV_STATS_INC operations. Exploitation requires low-privileged local access and concurrent bridge traffic; the demonstrated effect is lost or inconsistent device statistics, while direct code execution is not established.

CVSS severity7.0
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel bridge subsystem allows local users to corrupt interface statistics through concurrent packet processing. The br_handle_frame_finish function updates shared rx_packets, rx_bytes, and tx_dropped fields from multiple CPUs without mutual exclusion or SMP-safe DEV_STATS_INC operations. Exploitation requires low-privileged local access and concurrent bridge traffic; the demonstrated effect is lost or inconsistent device statistics, while direct code execution is not established.

The record

CVE
CVE-2023-52578
Published
Mar 2, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE 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=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <04cc361f029c14dd067ad180525c7392334c9bfd
  2. Affected versionversion=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <44bdb313da57322c9b3c108eb66981c6ec6509f4
  3. Affected versionversion=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <89f9f20b1cbd36d99d5a248a4bf8d11d4fd049a2
  4. Affected versionversion=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <8bc97117b51d68d5cea8f5351cca2d8c4153f394
  5. Affected versionversion=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <ad8d39c7b437fcdab7208a6a56c093d222c008d5
  6. Affected versionversion=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <d2346e6beb699909ca455d9d20c4e577ce900839
  7. Affected versionversion=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <f2ef4cb4d418fa64fe73eb84d10cc5c0e52e00fa
  8. Affected versionversion=2.6.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <04cc361f029c14dd067ad180525c7392334c9bfd; version=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <44bdb313da57322c9b3c108eb66981c6ec6509f4; version=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <89f9f20b1cbd36d99d5a248a4bf8d11d4fd049a2; version=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <8bc97117b51d68d5cea8f5351cca2d8c4153f394; version=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <ad8d39c7b437fcdab7208a6a56c093d222c008d5; version=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <d2346e6beb699909ca455d9d20c4e577ce900839; version=1c29fc4989bc2a3838b2837adc12b8aeb0feeede <f2ef4cb4d418fa64fe73eb84d10cc5c0e52e00fa; version=2.6.17

Published CVSS scores

7.0UbuntuCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7Oracle LinuxCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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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