CVE-2021-28038medium
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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
http://www.openwall.com/lists/oss-security/2021/03/05/1
http://xenbits.xen.org/xsa/advisory-367.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
Details
Source: MITRE
Published: 2021-03-05
Updated: 2021-04-09
Type: CWE-770
Risk Information
CVSS v2
Base Score: 4.9
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 3.9
Severity: MEDIUM
CVSS v3
Base Score: 6.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Impact Score: 4
Exploitability Score: 2
Severity: MEDIUM
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 151756 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1977-1) | Nessus | SuSE Local Security Checks | critical |
| 151730 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1975-1) | Nessus | SuSE Local Security Checks | critical |
| 150927 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1975-1) | Nessus | SuSE Local Security Checks | critical |
| 150901 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1977-1) | Nessus | SuSE Local Security Checks | critical |
| 150463 | OracleVM 3.4 : Unbreakable / etc (OVMSA-2021-0016) | Nessus | OracleVM Local Security Checks | high |
| 150292 | Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4984-1) | Nessus | Ubuntu Local Security Checks | medium |
| 149892 | openSUSE Security Update : the Linux Kernel (openSUSE-2021-758) | Nessus | SuSE Local Security Checks | critical |
| 149717 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1624-1) | Nessus | SuSE Local Security Checks | high |
| 149716 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1623-1) | Nessus | SuSE Local Security Checks | high |
| 149661 | Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-4945-2) | Nessus | Ubuntu Local Security Checks | high |
| 149633 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1617-1) | Nessus | SuSE Local Security Checks | high |
| 149491 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1596-1) | Nessus | SuSE Local Security Checks | high |
| 149462 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1573-1) | Nessus | SuSE Local Security Checks | high |
| 149416 | Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4945-1) | Nessus | Ubuntu Local Security Checks | high |
| 149410 | Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4946-1) | Nessus | Ubuntu Local Security Checks | medium |
| 149357 | Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9220) | Nessus | Oracle Linux Local Security Checks | high |
| 149356 | Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9221) | Nessus | Oracle Linux Local Security Checks | high |
| 149296 | Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9215) | Nessus | Oracle Linux Local Security Checks | high |
| 148747 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1238-1) | Nessus | SuSE Local Security Checks | critical |
| 148700 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1210-1) | Nessus | SuSE Local Security Checks | high |
| 148698 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1211-1) | Nessus | SuSE Local Security Checks | critical |
| 148674 | Citrix Hypervisor <= 8.2 LTSR DoS (CTX306565) | Nessus | Misc. | high |
| 148509 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1175-1) | Nessus | SuSE Local Security Checks | medium |
| 148498 | Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4904-1) | Nessus | Ubuntu Local Security Checks | medium |
| 148496 | Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4911-1) | Nessus | Ubuntu Local Security Checks | high |
| 148453 | Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9172) | Nessus | Oracle Linux Local Security Checks | high |
| 148452 | Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9175) | Nessus | Oracle Linux Local Security Checks | high |
| 148438 | openSUSE Security Update : the Linux Kernel (openSUSE-2021-532) | Nessus | SuSE Local Security Checks | critical |
| 148254 | Debian DLA-2610-1 : linux-4.19 security update | Nessus | Debian Local Security Checks | high |
| 147919 | Amazon Linux AMI : kernel (ALAS-2021-1487) | Nessus | Amazon Linux Local Security Checks | high |
| 147914 | Amazon Linux 2 : kernel (ALAS-2021-1616) | Nessus | Amazon Linux Local Security Checks | high |
| 147532 | Debian DLA-2586-1 : linux security update | Nessus | Debian Local Security Checks | high |