A flaw was found in Flatpak. A Time-of-check to time-of-use (TOCTOU) race condition exists in the `org.freedesktop.Flatpak.SystemHelper` component. This vulnerability occurs because a privileged `chmod` operation executes before the OSTree repository validation within the `Deploy()` function. An attacker can exploit this timing window to redirect symlinks to arbitrary files, potentially leading to unauthorized file manipulation or information disclosure.
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Solution
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References
History
Fri, 04 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | No description is available for this CVE. | A flaw was found in Flatpak. A Time-of-check to time-of-use (TOCTOU) race condition exists in the `org.freedesktop.Flatpak.SystemHelper` component. This vulnerability occurs because a privileged `chmod` operation executes before the OSTree repository validation within the `Deploy()` function. An attacker can exploit this timing window to redirect symlinks to arbitrary files, potentially leading to unauthorized file manipulation or information disclosure. |
| Title | flatpak: Flatpak: TOCTOU race condition allows symlink redirection | Flatpak: flatpak: toctou race condition allows symlink redirection |
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux |
|
| References |
|
Fri, 04 Sep 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | No description is available for this CVE. | |
| Title | flatpak: Flatpak: TOCTOU race condition allows symlink redirection | |
| Weaknesses | CWE-367 | |
| References |
| |
| Metrics |
threat_severity
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cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-04T21:02:00.079Z
Reserved: 2026-08-19T22:57:38.204Z
Link: CVE-2026-76925
No data.
Status : Received
Published: 2026-09-04T22:17:18.190
Modified: 2026-09-04T22:17:18.190
Link: CVE-2026-76925
OpenCVE Enrichment
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Weaknesses