PT-2025-8847 · Linux+7 · Linux Kernel+7

Dan Carpenter · Published 2025-01-17 · Updated 2026-05-11 · CVE-2025-21735

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A memory corruption issue exists due to insufficient bounds checking in the nci hci create pipe() function. The pipe variable, which is a u8 value coming from the network, can cause memory corruption in the nci hci connect gate() function if its value exceeds 127.

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

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2025-12647

BDU:2025-10245

CVE-2025-21735

DLA-4102-1

DLA-4178-1

OESA-2025-1283

OESA-2025-1284

OESA-2025-1446

OESA-2025-1450

OPENSUSE-SU-2025_1177-1

OPENSUSE-SU-2025_1178-1

OPENSUSE-SU-2025_1180-1

SUSE-SU-2025:01600-1

SUSE-SU-2025:01919-1

SUSE-SU-2025:1177-1

SUSE-SU-2025:1178-1

SUSE-SU-2025:1180-1

SUSE-SU-2025:20190-1

SUSE-SU-2025:20192-1

SUSE-SU-2025:20260-1

SUSE-SU-2025:20270-1

SUSE-SU-2025_01600-1

SUSE-SU-2025_1177-1

SUSE-SU-2025_1178-1

SUSE-SU-2025_1180-1

USN-7510-1

USN-7510-2

USN-7510-3

USN-7510-4

USN-7510-5

USN-7510-6

USN-7510-7

USN-7510-8

USN-7511-1

USN-7511-2

USN-7511-3

USN-7512-1

USN-7516-1

USN-7516-2

USN-7516-3

USN-7516-4

USN-7516-5

USN-7516-6

USN-7516-7

USN-7516-8

USN-7516-9

USN-7517-1

USN-7517-2

USN-7517-3

USN-7518-1

USN-7521-1

USN-7521-2

USN-7521-3

USN-7539-1

USN-7540-1

USN-7593-1

USN-7602-1

USN-7640-1

USN-7651-1

USN-7651-2

USN-7651-3

USN-7651-4

USN-7651-5

USN-7651-6

USN-7652-1

USN-7653-1

USN-7737-1

USN-8143-1

USN-8143-2

USN-8145-1

USN-8145-2

USN-8145-3

USN-8145-4

USN-8145-5

USN-8267-1

Affected Products

Alt Linux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 2332

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21735.json · Exploit
• https://ubuntu.com/security/notices/USN-7651-5 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58082 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23136 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21691 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21700 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7511-3 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21948 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58090 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58002 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21821 · Security Note
• https://ubuntu.com/security/CVE-2025-21743 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7539-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-56600 · Security Note
• https://ubuntu.com/security/CVE-2025-21827 · Vendor Advisory