SB2026031709 - Red Hat Enterprise Linux 8 update for the container-tools:rhel8 module
Published: March 17, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) UNIX symbolic link following (CVE-ID: CVE-2025-31133)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue within the maskedPaths feature. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
2) UNIX symbolic link following (CVE-ID: CVE-2025-52565)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue related to /dev/console mounts. A local user can escape the container using a malicious config and escalate privileges on the system.
3) UNIX symbolic link following (CVE-ID: CVE-2025-52881)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue related to procfs write redirects. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
4) Resource exhaustion (CVE-ID: CVE-2025-58183)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in archive/tar due to the tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A remote attacker can pass a specially crafted archive to the application and perform a denial of service (DoS) attack.
5) Input validation error (CVE-ID: CVE-2025-47913)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when handling SSH_AGENT_SUCCESS responses in ssh agent. A malicious server can send a specially crafted response to the ssh client and crash it.
6) Resource exhaustion (CVE-ID: CVE-2025-65637)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when using Entry.Writer() to log a single-line payload larger than 64KB without newline characters. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.