Input validation error in Linux kernel sched



| Updated: 2025-05-10
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-37798
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU108390

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-2025-37798

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 qdisc_bstats_update() function in net/sched/sch_fq_codel.c, within the codel_qdisc_dequeue() function in net/sched/sch_codel.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.13 - 6.13.11

CPE2.3 External links

https://git.kernel.org/stable/c/2f9761a94bae33d26e6a81b31b36e7d776d93dc1
https://git.kernel.org/stable/c/342debc12183b51773b3345ba267e9263bdfaaef
https://git.kernel.org/stable/c/4d55144b12e742404bb3f8fee6038bafbf45619d
https://git.kernel.org/stable/c/829c49b6b2ff45b043739168fd1245e4e1a91a30
https://git.kernel.org/stable/c/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31
https://git.kernel.org/stable/c/e73c838c80dccb9e4f19becc11d9f3cb4a27d483
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.12


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.



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