What is the CVSS score of CVE-2021-27365?

CVE-2021-27365 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.1%.

Is there a public PoC exploit available for CVE-2021-27365?

Yes, a public proof-of-concept exploit is available for CVE-2021-27365. Prioritise patching immediately. EPSS: 2.1%.

Is there a patch available for CVE-2021-27365?

Yes, a patch is available for CVE-2021-27365. Update the affected software to the latest version immediately.

Debian Linux CVE-2021-27365

HIGH

Out-of-bounds Write (CWE-787)

2021-03-07 cve@mitre.org

Buffer Overflow Linux Memory Corruption Debian Linux Tekelec Platform Distribution Solidfire Baseboard Management Controller Firmware

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 07, 2021 - 05:15 nvd

HIGH 7.8

DescriptionNVD

An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.

AnalysisAI

An issue was discovered in the Linux kernel through 5.11.3. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message. Affected products include: Linux Linux Kernel, Debian Debian Linux, Oracle Tekelec Platform Distribution, Netapp Solidfire Baseboard Management Controller Firmware. Version information: through 5.11.3..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).