Red Hat Enterprise Linux 8 update for kernel-rt

Published: 2025-05-19

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-53141 CVE-2025-21756
CWE-ID	CWE-20 CWE-416
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software	Red Hat Enterprise Linux for Real Time - Telecommunications Update Service Operating systems & Components / Operating system kernel-rt (Red Hat package) Operating systems & Components / Operating system package or component
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU101348

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-53141

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the bitmap_ip_uadt() function in net/netfilter/ipset/ip_set_bitmap_ip.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4

kernel-rt (Red Hat package): before 4.18.0-305.157.1.rt7.234.el8_4

CPE2.3

External links

https://access.redhat.com/errata/RHSA-2025:7902

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Use-after-free

EUVDB-ID: #VU104945

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2025-21756

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes