ALAS2023-2026-2129: nerdctl security update

ALAS2023-2026-2129, released August 31, 2026, fixes 4 CVEs in nerdctl (version 2.3.5-1.amzn2023.0.1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

8.2

Base score, 0 to 10

Highest EPSS

0.0038

32nd percentile

Priority of the 4 CVEs

Patch now 0
                                Urgent 0
                                High 1
                                Routine 3

Fixed package versions

Product	Release	Fixed in
nerdctl	amzn 2023	2.3.5-1.amzn2023.0.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-39822	Root escape via symlink plus trailing slash in os	8.2	0.0023	None reported
Routine	CVE-2026-42505	Invoking Encrypted Client Hello privacy leak in crypto/tls	5.3	0.0038	None reported
Routine	CVE-2026-47262	containerd: containerd is an open-source container runtime	5.5	0.0027	None reported
Routine	CVE-2026-10722	cilium ebpf LoadCollectionSpec/LoadCollectionSpecFromReader btf.go loadRawSpec integer overflow	5.5	0.0018	None reported

Also fixes CVE-2026-39822

OPENSUSE-SU-2026:21483-1
govulncheck-vulndb on opensuse-leap 16.0
RHSA-2026:49702
golang on RHEL 10
RHSA-2026:66350
openshift, openshift-clients, ose-crio-credential-provider on RHEL 10
RHSA-2026:38995
delve, go-toolset, golang and 6 more on RHEL 8
ALSA-2026:38995
delve, go-toolset, golang and 6 more on almalinux 8
RLSA-2026:38995
delve, golang on rocky 8
ELSA-2026-38995
delve, go-toolset, golang and 6 more on ol 8
RHSA-2026:37435
go-toolset, golang, golang-bin and 5 more on RHEL 9

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-2129.html

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