CVE-2023-53853

Unspecified impact via Netlink state data race

Published Dec 9, 2025 · Updated May 11, 2026

Race condition in the Linux kernel allows local users to cause unspecified impact through concurrent Netlink operations. netlink_recvmsg() and netlink_native_seq_show() read nlk->cb_running without synchronization while netlink dump paths write it, allowing the byte to change during a read. Local system calls reach the racing paths, but the Linux kernel CVE team has not published a concrete security consequence.

CVSS severityUnavailable
Unscored
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

Race condition in the Linux kernel allows local users to cause unspecified impact through concurrent Netlink operations. netlink_recvmsg() and netlink_native_seq_show() read nlk->cb_running without synchronization while netlink dump paths write it, allowing the byte to change during a read. Local system calls reach the racing paths, but the Linux kernel CVE team has not published a concrete security consequence.

The record

CVE
CVE-2023-53853
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 9, 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=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <02e7afd659a4c9ce1e98fc01ab4c510f3de1f0b3
  2. Affected versionversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <1d5c8b01f1df0461256a6d75854ed806f50645a3
  3. Affected versionversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <840a647499b093621167de56ffa8756dfc69f242
  4. Affected versionversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <a115dadf8995b1730c36c474401d97355705cb88
  5. Affected versionversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <a507022c862e10744a92c4bf5709775450a110ad
  6. Affected versionversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <a939d14919b799e6fff8a9c80296ca229ba2f8a4
  7. Affected versionversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <e25e9d8a210ed78bdf0f364576dbee13aefadbf8
  8. Affected versionversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <f92557f79a60cb142258f5fa7194f327573fadd8
  9. Affected versionversion=3.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <02e7afd659a4c9ce1e98fc01ab4c510f3de1f0b3; version=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <1d5c8b01f1df0461256a6d75854ed806f50645a3; version=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <840a647499b093621167de56ffa8756dfc69f242; version=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <a115dadf8995b1730c36c474401d97355705cb88; version=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <a507022c862e10744a92c4bf5709775450a110ad; version=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <a939d14919b799e6fff8a9c80296ca229ba2f8a4; version=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <e25e9d8a210ed78bdf0f364576dbee13aefadbf8; version=16b304f3404f8e0243d5ee2b70b68767b7b59b2b <f92557f79a60cb142258f5fa7194f327573fadd8; version=3.12

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
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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