CVE-2021-45469 Memory corruption in n/a

What is CVE-2021-45469?

CVE-2021-45469 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 23 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry.

Weakness: CWE-125

Which versions are affected by CVE-2021-45469?

It affects 11 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410c Firmware and 5 more.

How do I fix CVE-2021-45469?

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-2021-45469 being exploited?

There is no known exploitation of CVE-2021-45469 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-7073, DEBIAN-CVE-2021-45469, GHSA-mvqq-5fjm-9rq9, UBUNTU-CVE-2021-45469.