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Vulnerability · Published Mar 5, 2021 · Assigned by mitre

CVE-2021-28038

Medium 6.5

In plain English

A medium-severity security flaw in the linux package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.7%top 46.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.24-1DEBIAN-CVE-2021-28038
Debian:13linux5.10.24-1DEBIAN-CVE-2021-28038
Debian:14linux5.10.24-1DEBIAN-CVE-2021-28038
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-28038
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-28038
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-28038

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References