ZDI-26-569: Linux Kernel Net Scheduler True Link Equalizer Race Condition Local Privilege Escalation Vulnerability
A race condition vulnerability in the Linux Kernel's Net Scheduler True Link Equalizer component allows local attackers with high privileges to escalate their privileges further. The flaw arises from improper locking during operations on qdisc objects, enabling arbitrary code execution in kernel context. Linux has issued an update to address this issue.
AI Analysis
Technical Summary
This vulnerability (ZDI-26-569) affects the Linux Kernel's handling of qdisc objects within the Net Scheduler True Link Equalizer. Due to a race condition caused by missing proper locking mechanisms, an attacker who already has the ability to execute high-privileged code locally can exploit this flaw to escalate privileges and execute arbitrary code in kernel context. The vulnerability has a CVSS score of 7.5, indicating high severity. Linux has released a patch to fix the issue, as referenced in the official Linux kernel commit e5b811fe793166aecc59b085c1b7c31262ef2316.
Potential Impact
Local attackers with existing high-privilege code execution capabilities can exploit this race condition to escalate privileges further and execute arbitrary code within the kernel context. This can compromise system integrity and confidentiality by allowing attackers to gain full control over the affected system.
Mitigation Recommendations
Linux has issued an official update that corrects this vulnerability. Users and administrators should apply the Linux kernel update containing the fix referenced in commit e5b811fe793166aecc59b085c1b7c31262ef2316 to remediate this issue.
ZDI-26-569: Linux Kernel Net Scheduler True Link Equalizer Race Condition Local Privilege Escalation Vulnerability
Description
A race condition vulnerability in the Linux Kernel's Net Scheduler True Link Equalizer component allows local attackers with high privileges to escalate their privileges further. The flaw arises from improper locking during operations on qdisc objects, enabling arbitrary code execution in kernel context. Linux has issued an update to address this issue.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (ZDI-26-569) affects the Linux Kernel's handling of qdisc objects within the Net Scheduler True Link Equalizer. Due to a race condition caused by missing proper locking mechanisms, an attacker who already has the ability to execute high-privileged code locally can exploit this flaw to escalate privileges and execute arbitrary code in kernel context. The vulnerability has a CVSS score of 7.5, indicating high severity. Linux has released a patch to fix the issue, as referenced in the official Linux kernel commit e5b811fe793166aecc59b085c1b7c31262ef2316.
Potential Impact
Local attackers with existing high-privilege code execution capabilities can exploit this race condition to escalate privileges further and execute arbitrary code within the kernel context. This can compromise system integrity and confidentiality by allowing attackers to gain full control over the affected system.
Mitigation Recommendations
Linux has issued an official update that corrects this vulnerability. Users and administrators should apply the Linux kernel update containing the fix referenced in commit e5b811fe793166aecc59b085c1b7c31262ef2316 to remediate this issue.
Technical Details
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-569/","fetched":true,"fetchedAt":"2026-08-13T20:40:24.586Z","wordCount":202}
Threat ID: 6a7e2cfbbf8831d539c73d26
Added to database: 08/13/2026, 20:45:47 UTC
Last enriched: 08/13/2026, 20:48:15 UTC
Last updated: 08/13/2026, 20:56:13 UTC
Views: 5
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