CVE-2021-28038

MEDIUM

Linux Kernel 2.6.39-5.11.3 - Denial of Service via Netback Driver Memory Allocation Failure

Title source: llm

Description

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.

References (6)

Core 6

Core References

Mailing List, Patch, Third Party Advisory mailing-list

http://www.openwall.com/lists/oss-security/2021/03/05/1

Mailing List, Third Party Advisory mailing-list

https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html

Third Party Advisory mailing-list

https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html

Patch, Vendor Advisory

http://xenbits.xen.org/xsa/advisory-367.html

Third Party Advisory

https://security.netapp.com/advisory/ntap-20210409-0001/

Patch

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2991397d23ec597405b116d96de3813420bdcbc3

Scores

CVSS v3 6.5

EPSS 0.0006

EPSS Percentile 17.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Details

CWE

CWE-770

Status published

Products (5)

debian/debian_linux 9.0

linux/linux_kernel 5.12 rc1 (2 CPE variants)

linux/linux_kernel 2.6.39 - 4.4.260

netapp/cloud_backup

netapp/solidfire_baseboard_management_controller_firmware

Published Mar 05, 2021

Tracked Since Feb 18, 2026