Vulnerability-Lookup

RHSA-2026:52807

Vulnerability from csaf_redhat - Published: 2026-08-10 11:23 - Updated: 2026-09-06 09:09

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Important

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: podman: * podman-6.0.2-2.2.hum1 (aarch64, x86_64) * podman-docker-6.0.2-2.2.hum1 (noarch) * podman-machine-6.0.2-2.2.hum1 (aarch64, x86_64) * podman-remote-6.0.2-2.2.hum1 (aarch64, x86_64) * podmansh-6.0.2-2.2.hum1 (aarch64, x86_64) * podman-6.0.2-2.2.hum1.src (src)

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-17106

A flaw was found in moby/go-archive. The tar extraction routines in the component do not properly restrict filesystem operations to the intended destination directory. An attacker who controls the contents of an archive can exploit this by including symbolic links, allowing them to create or overwrite files at arbitrary locations on the system where the archive is being extracted. This could lead to unauthorized modification of system files or potentially arbitrary code execution.

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Affected products

Fixed 4 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:podman-main@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:podman-main@noarch	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:podman-main@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:podman-main@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

CVE-2026-75593

A flaw was found in BuildKit, a toolkit for converting source code to build artifacts. A malicious client with valid permissions to access the BuildKit control API can craft a special upload request. This request allows files to escape from the BuildKit-controlled state directory, potentially leading to unauthorized modification or deletion of files on the system.

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected products

Fixed 4 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:podman-main@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:podman-main@noarch	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:podman-main@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:podman-main@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

23 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:52807	self
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-75593	external
https://access.redhat.com/security/updates/classi…	external
https://access.redhat.com/security/cve/CVE-2026-17106	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-17106	self
https://bugzilla.redhat.com/show_bug.cgi?id=2518147	external
https://www.cve.org/CVERecord?id=CVE-2026-17106	external
https://nvd.nist.gov/vuln/detail/CVE-2026-17106	external
https://docs.docker.com/desktop/release-notes/#4860	external
https://docs.docker.com/engine/release-notes/29/#2970	external
https://github.com/docker/cli/releases/tag/v29.7.0	external
https://github.com/docker/compose/releases/tag/v5.4.0	external
https://github.com/docker/sbx-releases/releases/t…	external
https://github.com/moby/go-archive/releases/tag/v0.3.0	external
https://github.com/moby/go-archive/security/advis…	external
https://access.redhat.com/security/cve/CVE-2026-75593	self
https://bugzilla.redhat.com/show_bug.cgi?id=2519913	external
https://www.cve.org/CVERecord?id=CVE-2026-75593	external
https://nvd.nist.gov/vuln/detail/CVE-2026-75593	external
https://github.com/moby/buildkit/releases/tag/v0.31.2	external
https://github.com/moby/buildkit/security/advisor…	external

JSON

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          "text": "A flaw was found in moby/go-archive. The tar extraction routines in the component do not properly restrict filesystem operations to the intended destination directory. An attacker who controls the contents of an archive can exploit this by including symbolic links, allowing them to create or overwrite files at arbitrary locations on the system where the archive is being extracted. This could lead to unauthorized modification of system files or potentially arbitrary code execution.",
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        {
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          "date": "2026-08-10T11:23:19+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:podman-main@aarch64",
            "Red Hat Hardened Images:podman-main@noarch",
            "Red Hat Hardened Images:podman-main@src",
            "Red Hat Hardened Images:podman-main@x86_64"
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          "url": "https://access.redhat.com/errata/RHSA-2026:52807"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid processing tar archives from untrusted sources. When handling archives from potentially untrusted origins, ensure that the extraction process is executed with the least privileges necessary to limit the impact of any arbitrary file write attempts.",
          "product_ids": [
            "Red Hat Hardened Images:podman-main@aarch64",
            "Red Hat Hardened Images:podman-main@noarch",
            "Red Hat Hardened Images:podman-main@src",
            "Red Hat Hardened Images:podman-main@x86_64"
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      "scores": [
        {
          "cvss_v3": {
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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            "version": "3.1"
          },
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            "Red Hat Hardened Images:podman-main@src",
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          ]
        }
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        {
          "category": "impact",
          "details": "Important"
        }
      ],
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      "cwe": {
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      },
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          "system_name": "Red Hat Bugzilla ID",
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          "title": "Vulnerability description"
        },
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          "text": "github.com/moby/buildkit: BuildKit: File escape vulnerability allows unauthorized file modification",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A flaw in BuildKit allows a client with valid permissions to the BuildKit control API to perform unauthorized file modifications outside the intended build state directory. This issue is limited to authenticated clients, reducing the overall attack surface.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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        {
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        {
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:podman-main@aarch64",
            "Red Hat Hardened Images:podman-main@noarch",
            "Red Hat Hardened Images:podman-main@src",
            "Red Hat Hardened Images:podman-main@x86_64"
          ],
          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2026:52807"
        },
        {
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          "product_ids": [
            "Red Hat Hardened Images:podman-main@aarch64",
            "Red Hat Hardened Images:podman-main@noarch",
            "Red Hat Hardened Images:podman-main@src",
            "Red Hat Hardened Images:podman-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:podman-main@aarch64",
            "Red Hat Hardened Images:podman-main@noarch",
            "Red Hat Hardened Images:podman-main@src",
            "Red Hat Hardened Images:podman-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "github.com/moby/buildkit: BuildKit: File escape vulnerability allows unauthorized file modification"
    }
  ]
}

CVE-2026-17106 (GCVE-0-2026-17106)

Vulnerability from cvelistv5 – Published: 2026-08-18 18:35 – Updated: 2026-08-19 03:56

Title

Tar extraction in moby/go-archive can write outside the destination directory via link following

Summary

The tar extraction routines in moby/go-archive (Unpack, UnpackLayer, Untar/UntarUncompressed, and the ApplyLayer helpers) do not confine filesystem operations to the destination directory. The extractor decides where each archive entry lands using lexical string checks and then performs the filesystem operation on a path that is resolved by the OS, so links introduced by the archive can be followed out of the destination directory. An attacker who controls the contents of an archive can create or overwrite files at arbitrary paths writable by the extracting process.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-18 00:00 UTC

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

Docker mitre root

References

8 references

URL	Tags
https://github.com/moby/go-archive/security/advis…	vendor-advisory
https://docs.docker.com/desktop/release-notes/#4860	release-notes
https://github.com/docker/sbx-releases/releases/t…	release-notes
https://docs.docker.com/engine/release-notes/29/#2970	release-notes
https://github.com/docker/cli/releases/tag/v29.7.0	release-notes
https://github.com/docker/compose/releases/tag/v5.4.0	release-notes
https://github.com/moby/go-archive/releases/tag/v0.3.0	patch
https://github.com/masasron/CopyEscape-CVE-2026-17106	exploit

Impacted products

6 products

Vendor	Product	Version
moby	go-archive	Affected: 0 , < 0.3.0 (semver)
Docker	Docker Sandboxes	Affected: 0 , < 0.38.0 (semver) cpe:2.3:a:docker:docker_sandboxes::::::::
Docker	Docker Desktop	Affected: 0 , < 4.86.0 (semver) cpe:2.3:a:docker:desktop::::::::
Docker	Docker Engine	Affected: 0 , < 29.7.0 (semver)
Docker	Docker CLI	Affected: 0 , < 29.7.0 (semver)
Docker	Docker Compose	Affected: 0 , < 5.4.0 (semver)

Credits

Ron Masas (Imperva) and other independent reports

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-17106",
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        "dateUpdated": "2026-08-18T18:35:13.465Z",
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CVE-2026-75593 (GCVE-0-2026-75593)

Vulnerability from cvelistv5 – Published: 2026-08-19 20:06 – Updated: 2026-08-25 14:02

Title

BuildKit: Malicious client can bypass destination directory validation on local sources upload

Summary

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.2, a custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access BuildKit control API to issue builds, eg., bypass authentication, etc. This issue is fixed in version 0.31.2.

Severity

7.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 14:02 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/moby/buildkit/security/advisor…	x_refsource_CONFIRM
https://github.com/moby/buildkit/releases/tag/v0.31.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
moby	buildkit	Affected: < 0.31.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-75593",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

RHSA-2026:52807

CVE-2026-17106 (GCVE-0-2026-17106)

CVE-2026-75593 (GCVE-0-2026-75593)

Tags

Sightings

Nomenclature