Amazon Linux 2 Security Advisory: ALAS2-2026-3367
Advisory Released Date: 2026-06-22
Advisory Updated Date: 2026-06-22
Severity:
Important
Issue Overview:
libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfs_zdr_string in lib/libnfs-zdr.c. (CVE-2026-53689)
Affected Packages:
libnfs
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libnfs or yum update --advisory ALAS2-2026-3367 to update your system.
New Packages:
aarch64:
libnfs-1.11.0-1.amzn2.0.2.aarch64
libnfs-devel-1.11.0-1.amzn2.0.2.aarch64
libnfs-utils-1.11.0-1.amzn2.0.2.aarch64
libnfs-debuginfo-1.11.0-1.amzn2.0.2.aarch64
i686:
libnfs-1.11.0-1.amzn2.0.2.i686
libnfs-devel-1.11.0-1.amzn2.0.2.i686
libnfs-utils-1.11.0-1.amzn2.0.2.i686
libnfs-debuginfo-1.11.0-1.amzn2.0.2.i686
src:
libnfs-1.11.0-1.amzn2.0.2.src
x86_64:
libnfs-1.11.0-1.amzn2.0.2.x86_64
libnfs-devel-1.11.0-1.amzn2.0.2.x86_64
libnfs-utils-1.11.0-1.amzn2.0.2.x86_64
libnfs-debuginfo-1.11.0-1.amzn2.0.2.x86_64