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UBUNTU-CVE-2021-27365

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UBUNTU-CVE-2021-27365

Published: 7 Mar 2021Last Modified: 9 Sept 2026

Upstream:

Aliases:

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2021-27365, https://git.kernel.org/linus/ec98ea7070e94cc25a422ec97d1421e28d97b7ee, https://git.kernel.org/linus/f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5, https://bugzilla.suse.com/show_bug.cgi?id=1182715, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5, https://www.openwall.com/lists/oss-security/2021/03/06/1, https://ubuntu.com/security/notices/USN-4883-1, https://ubuntu.com/security/notices/USN-4887-1, https://ubuntu.com/security/notices/USN-4889-1, https://ubuntu.com/security/notices/USN-4901-1, https://www.cve.org/CVERecord?id=CVE-2021-27365

Affected packages

Package

Name: linux

Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty%2Fesm

Affected ranges

Type: ECOSYSTEM

Events:

Introduced- 0

Fixed -3.13.0-185.236

Affected versions

3.11.0-12.19

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High