Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-104715: A flaw was found in cifs-utils. This flaw allows an unprivileged local user to achieve privilege escalation. When a privileged service mounts a Common Internet File System (CIFS) share using a user-controlled credentials file, input values are not properly sanitized before being assembled into mount options. A local attacker can exploit this vulnerability to inject unauthorized mount options, allowing them to bypass permission checks and execute files with administrative (root) privileges.
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | cifs-utils | 0:7.7-145.amzn2023.0.1 |
| Amazon Linux · 2023 | cifs-utils-debuginfo | 0:7.7-145.amzn2023.0.1 |
| Amazon Linux · 2023 | cifs-utils-debugsource | 0:7.7-145.amzn2023.0.1 |
| Amazon Linux · 2023 | cifs-utils-devel | 0:7.7-145.amzn2023.0.1 |
| Amazon Linux · 2023 | cifs-utils-info | 0:7.7-145.amzn2023.0.1 |
| Amazon Linux · 2023 | pam_cifscreds | 0:7.7-145.amzn2023.0.1 |
| Amazon Linux · 2023 | pam_cifscreds-debuginfo | 0:7.7-145.amzn2023.0.1 |
Vulnerabilities 1
-
High 7.8CVE-2026-104715 Public exploit
Cifs-utils: mount.cifs credential-file option injection allows local privilege boundary bypass
A flaw was found in cifs-utils. This flaw allows an unprivileged local user to achieve privilege escalation. When a privileged service mounts a Common Internet File System (CIFS) share using a user-controlled credentials file, input values are not properly sa…
References
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-104715.html