#VU112249 Integer underflow in Linux kernel - CVE-2025-38107

Vulnerability identifier: #VU112249

Vulnerability risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2025-38107

CWE-ID: CWE-191

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer underflow within the ets_qdisc_change() function in net/sched/sch_ets.c. A local user can execute arbitrary code.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/0383b25488a545be168744336847549d4a2d3d6c
https://git.kernel.org/stable/c/073f64c03516bcfaf790f8edc772e0cfb8a84ec3
https://git.kernel.org/stable/c/0b479d0aa488cb478eb2e1d8868be946ac8afb4f
https://git.kernel.org/stable/c/347867cb424edae5fec1622712c8dd0a2c42918f
https://git.kernel.org/stable/c/d92adacdd8c2960be856e0b82acc5b7c5395fddb
https://git.kernel.org/stable/c/eb7b74e9754e1ba2088f914ad1f57a778b11894b
https://git.kernel.org/stable/c/fed94bd51d62d2e0e006aa61480e94e5cd0582b0

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?