Skip to main content

CVE-2026-91205: Race Condition Enabling Link Following in Red Hat Red Hat Enterprise Linux 10

0
Medium
VulnerabilityCVE-2026-91205cvecve-2026-91205
Published: 09/18/2026 (09/18/2026, 19:14:47 UTC)
Source: CVE Database V5
Vendor/Project: Red Hat
Product: Red Hat Enterprise Linux 10

Description

A flaw was found in cockpit-files. A local unprivileged attacker can exploit a race condition during directory creation with owner assignment. By controlling a writable parent directory, the attacker can replace a newly created directory with a symbolic link (symlink) before the ownership change operation (chown) is applied. This allows the attacker to redirect the ownership change to an arbitrary file, potentially leading to information disclosure or unauthorized modification of sensitive files.

CVSS v3.1

Score 6.0medium

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

Affected software

Red Hat

Red Hat Enterprise Linux 10

Red Hat

Red Hat Enterprise Linux 9

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/18/2026, 19:47:43 UTC

Technical Analysis

This vulnerability involves a race condition in the cockpit-files create_directory() function where an attacker can hijack the ownership change (chown) operation by substituting a newly created directory with a symbolic link. By exploiting this timing window, a local attacker with low privileges can redirect the ownership change to arbitrary files, potentially causing unauthorized disclosure or modification of sensitive data. The issue is tracked as CWE-363 (Race Condition Enabling Link Following). Red Hat has published an advisory indicating the vulnerability is under investigation, with no confirmed affected versions or patches at this time.

Potential Impact

If exploited, this vulnerability could allow a local unprivileged attacker to gain unauthorized access or modify sensitive files by redirecting ownership changes to arbitrary files via symbolic link manipulation. The confidentiality and integrity of affected systems could be compromised. Availability is not impacted. The attack requires local access, low privileges, and user interaction, with high attack complexity.

Mitigation Recommendations

Red Hat has not yet released a fix and the vulnerability is currently under investigation. There is no official patch or mitigation available at this time. Users should monitor the Red Hat advisory page for updates and apply any forthcoming patches promptly once released. No specific mitigations are currently recommended by Red Hat.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Data Version
5.2
Assigner Short Name
redhat
Date Reserved
2026-09-14T21:59:16.679Z
Cvss Version
3.1
State
PUBLISHED
Vendor Advisory Urls
[{"url":"https://access.redhat.com/security/cve/CVE-2026-91205","vendor":"Red Hat"}]

Threat ID: 6aad91cb55bf5e2cf571918e

Added to database: 09/18/2026, 19:32:27 UTC

Last enriched: 09/18/2026, 19:47:43 UTC

Last updated: 09/19/2026, 03:01:24 UTC

Views: 5

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses