PT-2025-14344 · Linux+10 · Linux Kernel+10

Published 2025-03-11 · Updated 2026-04-20 · CVE-2025-21963

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to an integer overflow in the Linux kernel when processing the acdirmax mount option. This occurs because the user-provided mount parameter acdirmax of type u32 is converted from seconds to jiffies before validation, which can lead to an integer overflow.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALSA-2025:9080

ALT-PU-2025-12647

ALT-PU-2025-5786

AZL-60282

AZL-60316

BDU:2025-11922

CVE-2025-21963

DLA-4193-1

DSA-5900-1

ECHO-5FA1-A823-071C

INFSA-2025_9080

MGASA-2025-0142

MGASA-2025-0146

OESA-2025-1446

OESA-2025-1450

OPENSUSE-SU-2025_01614-1

OPENSUSE-SU-2025_01707-1

RHSA-2025:9079

RHSA-2025:9080

RHSA-2025_9080

SUSE-SU-2025:01600-1

SUSE-SU-2025:01614-1

SUSE-SU-2025:01707-1

SUSE-SU-2025:01919-1

SUSE-SU-2025:01951-1

SUSE-SU-2025:01964-1

SUSE-SU-2025:01967-1

SUSE-SU-2025:01972-1

SUSE-SU-2025:20343-1

SUSE-SU-2025:20344-1

SUSE-SU-2025:20354-1

SUSE-SU-2025:20355-1

SUSE-SU-2025_01600-1

SUSE-SU-2025_01614-1

SUSE-SU-2025_01707-1

SUSE-SU-2025_01951-1

SUSE-SU-2025_01964-1

SUSE-SU-2025_01967-1

SUSE-SU-2025_01972-1

USN-7591-1

USN-7591-2

USN-7591-3

USN-7591-4

USN-7591-5

USN-7591-6

USN-7592-1

USN-7593-1

USN-7597-1

USN-7597-2

USN-7598-1

USN-7602-1

USN-7605-1

USN-7605-2

USN-7606-1

USN-7628-1

USN-7655-1

USN-7764-1

USN-7764-2

USN-7765-1

USN-7766-1

USN-7767-1

USN-7767-2

USN-7779-1

USN-7790-1

USN-7800-1

USN-7801-1

USN-7801-2

USN-7801-3

USN-7802-1

USN-7809-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Hat

Red Os

Rocky Linux

Suse

Ubuntu

References · 2224

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21963.json · Exploit
• https://ubuntu.com/security/CVE-2025-21945 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35866 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-53181 · Security Note
• https://osv.dev/vulnerability/USN-7591-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-22013 · Security Note
• https://osv.dev/vulnerability/USN-7809-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37819 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37740 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22034 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37881 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22022 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23138 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2025:9080 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-58017 · Security Note