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Vulnerability · Published Mar 22, 2021 · Assigned by mitre

CVE-2021-28972

Medium 6.7

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 0.8% (higher than 57% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.7Medium
Exploit odds (30 days)0.8%top 43.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.26-1DEBIAN-CVE-2021-28972
Debian:13linux5.10.26-1DEBIAN-CVE-2021-28972
Debian:14linux5.10.26-1DEBIAN-CVE-2021-28972
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-28972
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-28972
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-28972

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References