Amazon Linux 2023 Security Advisory: ALAS2023-2026-3291
Advisory Released Date: 2026-10-24
Advisory Updated Date: 2026-10-26
Severity:
Important
Issue Overview:
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. (CVE-2026-104715)
Affected Packages:
cifs-utils
Issue Correction:
Run dnf update cifs-utils --releasever 2023.12.20261026 or dnf update --advisory ALAS2023-2026-3291 --releasever 2023.12.20261026 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
cifs-utils-devel-7.7-145.amzn2023.0.1.aarch64
cifs-utils-debugsource-7.7-145.amzn2023.0.1.aarch64
cifs-utils-debuginfo-7.7-145.amzn2023.0.1.aarch64
cifs-utils-info-7.7-145.amzn2023.0.1.aarch64
pam_cifscreds-debuginfo-7.7-145.amzn2023.0.1.aarch64
pam_cifscreds-7.7-145.amzn2023.0.1.aarch64
cifs-utils-7.7-145.amzn2023.0.1.aarch64
src:
cifs-utils-7.7-145.amzn2023.0.1.src
x86_64:
cifs-utils-debuginfo-7.7-145.amzn2023.0.1.x86_64
pam_cifscreds-debuginfo-7.7-145.amzn2023.0.1.x86_64
cifs-utils-info-7.7-145.amzn2023.0.1.x86_64
cifs-utils-debugsource-7.7-145.amzn2023.0.1.x86_64
pam_cifscreds-7.7-145.amzn2023.0.1.x86_64
cifs-utils-devel-7.7-145.amzn2023.0.1.x86_64
cifs-utils-7.7-145.amzn2023.0.1.x86_64