Vulnerability Description
AGL app-framework-main thru 17.1.12 contains a Zip Slip path traversal vulnerability (CWE-22) combined with a TOCTOU race condition (CWE-367) in the widget installation flow. The is_valid_filename function in wgtpkg-zip.c validates ZIP entry names but does not check for dot notation directory traversal sequences it only blocks absolute paths. The zread extraction function uses openat(workdirfd, filename, O_CREAT) which resolves dot notation values relative to the work directory, allowing files to be written anywhere on the filesystem. Critically, in function install_widget in file wgtpkg-install.c, extraction via zread occurs BEFORE signature verification via check_all_signatures. Even if signature verification fails, the error cleanup (remove_workdir) only deletes the temporary work directory files written outside via path traversal persist permanently.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Automotive Grade Linux | <= 17.1.12 |
Related Weaknesses (CWE)
References
- https://gerrit.automotivelinux.org/gerrit/src/app-framework-mainBroken Link
- https://gist.github.com/sgInnora/8526eedcfd826d05ef1fc45d8f405643Third Party Advisory
FAQ
What is CVE-2026-37531?
CVE-2026-37531 is a vulnerability with a CVSS score of 9.8 (CRITICAL). AGL app-framework-main thru 17.1.12 contains a Zip Slip path traversal vulnerability (CWE-22) combined with a TOCTOU race condition (CWE-367) in the widget installation flow. The is_valid_filename fun...
How severe is CVE-2026-37531?
CVE-2026-37531 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-37531?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Automotive Grade Linux.