Summary
The podman tool manages pods, container images, and containers. It is part of the libpod library, which is for applications that use container pods. Container pods is a concept in Kubernetes.
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/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions (CVE-2026-39832)
* golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey (CVE-2026-42508)
* golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass (CVE-2026-27136)
* golang.org/x/net/html: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting (CVE-2026-25681)
* podman: Podman: Information disclosure via malicious container image environment variables (CVE-2026-57231)
Bug Fix(es) and Enhancement(s):
* podman does not clean up all files and leaves orphaned files consuming disk space [almalinux-9.8.z] (JIRA:AlmaLinux-173988)
* [FJ9.8 Bug]: [REG]The "podman-remote save" command fails for rootless users. [almalinux-9.8.z] (JIRA:AlmaLinux-192439)
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.
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | podman | 6:5.8.2-4.el9_8 |
| AlmaLinux · 9 | podman-docker | 6:5.8.2-4.el9_8 |
| AlmaLinux · 9 | podman-plugins | 6:5.8.2-4.el9_8 |
| AlmaLinux · 9 | podman-remote | 6:5.8.2-4.el9_8 |
| AlmaLinux · 9 | podman-tests | 6:5.8.2-4.el9_8 |
Vulnerabilities 7
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Critical 9.1
Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote…
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Critical 9.1
Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
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High 7.5
Invoking pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh
The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by …
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High 7.5
Podman: Malformed Image can trick podman run into leaking host environment variables into the container
Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse…
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Medium 6.1
Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
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Medium 6.1
Invoking duplicate attributes can cause XSS in golang.org/x/net/html
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
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Medium 5.3
Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh
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.
References
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report
https://access.redhat.com/security/cve/CVE-2026-25681
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report
https://access.redhat.com/security/cve/CVE-2026-27136
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report
https://access.redhat.com/security/cve/CVE-2026-39829
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report
https://access.redhat.com/security/cve/CVE-2026-39832
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report
https://access.redhat.com/security/cve/CVE-2026-39835
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report
https://access.redhat.com/security/cve/CVE-2026-42508
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report
https://access.redhat.com/security/cve/CVE-2026-57231
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report
https://bugzilla.redhat.com/2480680
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report
https://bugzilla.redhat.com/2480681
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report
https://bugzilla.redhat.com/2480685
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report
https://bugzilla.redhat.com/2480688
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report
https://bugzilla.redhat.com/2480757
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report
https://bugzilla.redhat.com/2480761
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report
https://bugzilla.redhat.com/2493620
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advisory
https://errata.almalinux.org/9/ALSA-2026-37123.html