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ALSA-2026:36199 — Important: buildah security update

Affected: AlmaLinux:10: buildah, AlmaLinux:10: buildah-tests

The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images.

Security Fix(es):

* golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835) * golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters (CVE-2026-39829) * golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses (CVE-2026-39830) * golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions (CVE-2026-39832)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2026-15465

BELL-CVE-2026-39835

Affected: Alpaquita:23: buildah, Alpaquita:23: containerd, Alpaquita:23: podman, Alpaquita:23: skopeo, Alpaquita:25: buildah, Alpaquita:25: containerd, Alpaquita:25: docker-cli-buildx, Alpaquita:25: google-guest-agent, Alpaquita:25: osv-scanner, Alpaquita:25: podman and 13 more

certfr-2026-avi-0674 — De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Elles permettent à un attaquant de provoqu…

certfr-2026-avi-0674

Withdrawn: CLEANSTART-2026-AD30368 — Security fixes for CVE-2026-2303, CVE-2026-25680, CVE-2026-25681, CVE-2026-27136, CVE-2026-39821, CVE-2026-39827, CVE-2…

Withdrawn by the publisher.

Affected: CleanStart: weaviate-fips

Multiple security vulnerabilities affect the weaviate-fips package. These issues are resolved in later releases. See references for individual vulnerability details.

EUVD-2026-371782

fkie_cve-2026-39835

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

GHSA-78mq-xcr3-xm33 — golang.org/x/crypto is vulnerable to invoking server panic during CheckHostKey/Authenticate flow

Affected: Go: golang.org/x/crypto

msrc_CVE-2026-39835 — Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh

msrc_CVE-2026-39835

openSUSE-SU-2026:10842-1 — apptainer-1.4.5-5.1 on GA media

apptainer-1.4.5-5.1 on GA media

RHSA-2026:26546 — Red Hat Security Advisory: RHACS 4.9.8 security and bug fix update

golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via unexpected HTML tree rendering golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Authorization bypass due to skipped source-address validation

RLSA-2026:36199 — Important: buildah security update

Affected: Rocky Linux:10: buildah

Security Fix(es):

* golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835)

* golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters (CVE-2026-39829)

* golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses (CVE-2026-39830)

* golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions (CVE-2026-39832)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

SUSE-SU-2026:22065-1 — Security update for elemental-toolkit

Security update for elemental-toolkit

UBUNTU-CVE-2026-39835

Affected: Ubuntu:Pro:16.04:LTS: golang-go.crypto, Ubuntu:Pro:16.04:LTS: lxd, Ubuntu:Pro:16.04:LTS: snapd, Ubuntu:Pro:16.04:LTS: google-guest-agent, Ubuntu:Pro:18.04:LTS: lxd, Ubuntu:Pro:18.04:LTS: snapd, Ubuntu:Pro:18.04:LTS: golang-go.crypto, Ubuntu:Pro:18.04:LTS: google-guest-agent, Ubuntu:Pro:20.04:LTS: google-guest-agent, Ubuntu:Pro:20.04:LTS: snapd and 13 more

WID-SEC-W-2026-1653 — Golang Go-Module (Net, Image, Crypto: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um erweiterte Privilegien zu erlangen, Cross-Site-Scripting-Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen oder einen Denial-of-Service-Zustand zu verursachen.