OPENSUSE-SU-2026:10450-1 - Vulnerability-Lookup

OPENSUSE-SU-2026:10450-1

Vulnerability from csaf_opensuse - Published: 2026-03-28 00:00 - Updated: 2026-03-28 00:00

Summary

incus-6.23-1.1 on GA media

Severity

Moderate

Notes

Title of the patch: incus-6.23-1.1 on GA media

Description of the patch: These are all security issues fixed in the incus-6.23-1.1 package on the GA media of openSUSE Tumbleweed.

Patchnames: openSUSE-Tumbleweed-2026-10450

Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).

CVE-2026-33542

6.4 (Medium)


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

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-33711

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-33743

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-33897

8.8 (High)


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

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-33898

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-33945

8.8 (High)


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

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

References

URL

Category

	https://www.suse.com/support/security/rating/	external
	https://ftp.suse.com/pub/projects/security/csaf/o…	self
	https://www.suse.com/security/cve/CVE-2026-33542/	self
	https://www.suse.com/security/cve/CVE-2026-33711/	self
	https://www.suse.com/security/cve/CVE-2026-33743/	self
	https://www.suse.com/security/cve/CVE-2026-33897/	self
	https://www.suse.com/security/cve/CVE-2026-33898/	self
	https://www.suse.com/security/cve/CVE-2026-33945/	self
	https://www.suse.com/security/cve/CVE-2026-33542	external
	https://bugzilla.suse.com/1260939	external
	https://www.suse.com/security/cve/CVE-2026-33711	external
	https://bugzilla.suse.com/1260937	external
	https://www.suse.com/security/cve/CVE-2026-33743	external
	https://bugzilla.suse.com/1260936	external
	https://www.suse.com/security/cve/CVE-2026-33897	external
	https://bugzilla.suse.com/1260935	external
	https://www.suse.com/security/cve/CVE-2026-33898	external
	https://bugzilla.suse.com/1260883	external
	https://www.suse.com/security/cve/CVE-2026-33945	external
	https://bugzilla.suse.com/1260880	external

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          "text": "Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "openSUSE Tumbleweed:incus-6.23-1.1.ppc64le",
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      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-33542",
          "url": "https://www.suse.com/security/cve/CVE-2026-33542"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1260939 for CVE-2026-33542",
          "url": "https://bugzilla.suse.com/1260939"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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          "cvss_v3": {
            "baseScore": 6.4,
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            "version": "3.1"
          },
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          "date": "2026-03-28T00:00:00Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-33542"
    },
    {
      "cve": "CVE-2026-33711",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-33711"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Incus is a system container and virtual machine manager. Incus provides an API to retrieve VM screenshots. That API relies on the use of a temporary file for QEMU to write the screenshot to which is then picked up and sent to the user prior to deletion. As versions prior to 6.23.0 use predictable paths under /tmp for this, an attacker with local access to the system can abuse this mechanism by creating their own symlinks ahead of time. On the vast majority of Linux systems, this will result in a \"Permission denied\" error when requesting a screenshot. That\u0027s because the Linux kernel has a security feature designed to block such attacks, `protected_symlinks`. On the rare systems with this purposefully disabled, it\u0027s then possible to trick Incus intro truncating and altering the mode and permissions of arbitrary files on the filesystem, leading to a potential denial of service or possible local privilege escalation. Version 6.23.0 fixes the issue.",
          "title": "CVE description"
        }
      ],
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          "category": "external",
          "summary": "CVE-2026-33711",
          "url": "https://www.suse.com/security/cve/CVE-2026-33711"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1260937 for CVE-2026-33711",
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          "date": "2026-03-28T00:00:00Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-33711"
    },
    {
      "cve": "CVE-2026-33743",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-33743"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Incus is a system container and virtual machine manager. Prior to version 6.23.0, a specially crafted storage bucket backup can be used by an user with access to Incus\u0027 storage bucket feature to crash the Incus daemon. Repeated use of this attack can be used to keep the server offline causing a denial of service of the control plane API. This does not impact any running workload, existing containers and virtual machines will keep operating. Version 6.23.0 fixes the issue.",
          "title": "CVE description"
        }
      ],
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          "summary": "CVE-2026-33743",
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        },
        {
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          "summary": "SUSE Bug 1260936 for CVE-2026-33743",
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      ],
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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    {
      "cve": "CVE-2026-33897",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-33897"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Incus is a system container and virtual machine manager. Prior to version 6.23.0, instance template files can be used to cause arbitrary read or writes as root on the host server. Incus allows for pongo2 templates within instances which can be used at various times in the instance lifecycle to template files inside of the instance. This particular implementation of pongo2 within Incus allowed for file read/write but with the expectation that the pongo2 chroot feature would isolate all such access to the instance\u0027s filesystem. This was allowed such that a template could theoretically read a file and then generate a new version of said file. Unfortunately the chroot isolation mechanism is entirely skipped by pongo2 leading to easy access to the entire system\u0027s filesystem with root privileges. Version 6.23.0 patches the issue.",
          "title": "CVE description"
        }
      ],
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CVE-2026-33711 (GCVE-0-2026-33711)

Vulnerability from cvelistv5 – Published: 2026-03-26 22:37 – Updated: 2026-03-27 20:00

Title

Incus vulnerable to local privilege escalation through VM screenshot path

Summary

Incus is a system container and virtual machine manager. Incus provides an API to retrieve VM screenshots. That API relies on the use of a temporary file for QEMU to write the screenshot to which is then picked up and sent to the user prior to deletion. As versions prior to 6.23.0 use predictable paths under /tmp for this, an attacker with local access to the system can abuse this mechanism by creating their own symlinks ahead of time. On the vast majority of Linux systems, this will result in a "Permission denied" error when requesting a screenshot. That's because the Linux kernel has a security feature designed to block such attacks, `protected_symlinks`. On the rare systems with this purposefully disabled, it's then possible to trick Incus intro truncating and altering the mode and permissions of arbitrary files on the filesystem, leading to a potential denial of service or possible local privilege escalation. Version 6.23.0 fixes the issue.

Severity ?

4.7 (Medium)


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

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following

Assigner

GitHub_M

References

URL

Tags

https://github.com/lxc/incus/security/advisories/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	lxc	incus	Affected: < 6.23.0

Show details on NVD website

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CVE-2026-33945 (GCVE-0-2026-33945)

Vulnerability from cvelistv5 – Published: 2026-03-26 23:27 – Updated: 2026-03-27 20:00

Title

Abitrary file write through systemd-creds option

Summary

Incus is a system container and virtual machine manager. Incus instances have an option to provide credentials to systemd in the guest. For containers, this is handled through a shared directory. Prior to version 6.23.0, an attacker can set a configuration key named something like `systemd.credential.../../../../../../root/.bashrc` to cause Incus to write outside of the `credentials` directory associated with the container. This makes use of the fact that the Incus syntax for such credentials is `systemd.credential.XYZ` where `XYZ` can itself contain more periods. While it's not possible to read any data this way, it's possible to write to arbitrary files as root, enabling both privilege escalation and denial of service attacks. Version 6.23.0 fixes the issue.

Severity ?

10 (Critical)


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

CWE

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

Assigner

GitHub_M

References

URL

Tags

https://github.com/lxc/incus/security/advisories/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	lxc	incus	Affected: < 6.23.0

Show details on NVD website

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CVE-2026-33743 (GCVE-0-2026-33743)

Vulnerability from cvelistv5 – Published: 2026-03-26 22:40 – Updated: 2026-03-27 13:53

Title

Incus vulnerable to denial of source through crafted bucket backup file

Summary

Incus is a system container and virtual machine manager. Prior to version 6.23.0, a specially crafted storage bucket backup can be used by an user with access to Incus' storage bucket feature to crash the Incus daemon. Repeated use of this attack can be used to keep the server offline causing a denial of service of the control plane API. This does not impact any running workload, existing containers and virtual machines will keep operating. Version 6.23.0 fixes the issue.

Severity ?

6.5 (Medium)


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

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M

References

URL

Tags

https://github.com/lxc/incus/security/advisories/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	lxc	incus	Affected: < 6.23.0

Show details on NVD website

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CVE-2026-33542 (GCVE-0-2026-33542)

Vulnerability from cvelistv5 – Published: 2026-03-26 22:32 – Updated: 2026-03-30 11:47

Title

Incus does not verify combined fingerprint when downloading images from simplestreams servers

Summary

Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.

Severity ?

5.7 (Medium)


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

CWE

CWE-295 - Improper Certificate Validation

Assigner

GitHub_M

References

URL

Tags

https://github.com/lxc/incus/security/advisories/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	lxc	incus	Affected: < 6.23.0

Show details on NVD website

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CVE-2026-33897 (GCVE-0-2026-33897)

Vulnerability from cvelistv5 – Published: 2026-03-26 22:43 – Updated: 2026-03-27 20:02

Title

Incus vulnerable to arbitrary file read and write through pongo templates

Summary

Incus is a system container and virtual machine manager. Prior to version 6.23.0, instance template files can be used to cause arbitrary read or writes as root on the host server. Incus allows for pongo2 templates within instances which can be used at various times in the instance lifecycle to template files inside of the instance. This particular implementation of pongo2 within Incus allowed for file read/write but with the expectation that the pongo2 chroot feature would isolate all such access to the instance's filesystem. This was allowed such that a template could theoretically read a file and then generate a new version of said file. Unfortunately the chroot isolation mechanism is entirely skipped by pongo2 leading to easy access to the entire system's filesystem with root privileges. Version 6.23.0 patches the issue.

Severity ?

10 (Critical)


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

CWE

CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine

Assigner

GitHub_M

References

URL

Tags

https://github.com/lxc/incus/security/advisories/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	lxc	incus	Affected: < 6.23.0

Show details on NVD website

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CVE-2026-33898 (GCVE-0-2026-33898)

Vulnerability from cvelistv5 – Published: 2026-03-26 23:25 – Updated: 2026-03-30 11:48

Title

Local Incus UI web server vulnerable to nuthentication bypass

Summary

Incus is a system container and virtual machine manager. Prior to version 6.23.0, the web server spawned by `incus webui` incorrectly validates the authentication token such that an invalid value will be accepted. `incus webui` runs a local web server on a random localhost port. For authentication, it provides the user with a URL containing an authentication token. When accessed with that token, Incus creates a cookie persisting that token without needing to include it in subsequent HTTP requests. While the Incus client correctly validates the value of the cookie, it does not correctly validate the token when passed int the URL. This allows for an attacker able to locate and talk to the temporary web server on localhost to have as much access to Incus as the user who ran `incus webui`. This can lead to privilege escalation by another local user or an access to the user's Incus instances and possibly system resources by a remote attack able to trick the local user into interacting with the Incus UI web server. Version 6.23.0 patches the issue.

Severity ?

8.8 (High)


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

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M

References

URL

Tags

https://github.com/lxc/incus/security/advisories/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	lxc	incus	Affected: < 6.23.0

Show details on NVD website

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All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

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.