CVE-2021-27364 Memory corruption in n/a
An unprivileged user can trigger memory corruption in the Linux kernel iSCSI transport driver via crafted Netlink messages, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-27364?
CVE-2021-27364 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 7 Mar 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is adversely affected by the ability of an unprivileged user to craft Netlink messages.
Weakness: CWE-125
Which versions are affected by CVE-2021-27364?
It affects 6 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Netapp Cloud Backup, Netapp Solidfire Baseboard Management Controller Firmware, Oracle Tekelec Platform Distribution.
How do I fix CVE-2021-27364?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-27364 being exploited?
There is no known exploitation of CVE-2021-27364 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as AZL-6533, DEBIAN-CVE-2021-27364, GHSA-qh7p-rxx9-vwx2, UBUNTU-CVE-2021-27364.