GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
usn-8102-2
Vulnerability from osv_ubuntu
Published
2026-03-17 22:33
Modified
2026-04-27 14:11
Summary
snapd regression
Details

USN-8102-1 fixed a vulnerability in snapd. The update caused a regresision for Ubuntu 24.04 LTS while installing the package. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Qualys discovered that snapd incorrectly handled certain operations in the snap's private /tmp directory. If systemd-tmpfiles is enabled to automatically clean up this directory, a local attacker could possibly use this issue to re-create the deleted directory, resulting in privilege escalation.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-3888",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "golang-github-snapcore-snapd-dev",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "golang-github-ubuntu-core-snappy-dev",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "snap-confine",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "snapd",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "snapd-xdg-open",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "ubuntu-core-launcher",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "ubuntu-core-snapd-units",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "ubuntu-snappy",
            "binary_version": "2.73+ubuntu24.04.2"
          },
          {
            "binary_name": "ubuntu-snappy-cli",
            "binary_version": "2.73+ubuntu24.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "snapd",
        "purl": "pkg:deb/ubuntu/snapd@2.73+ubuntu24.04.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.73+ubuntu24.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.60.4+23.10",
        "2.61.3+24.04",
        "2.62+24.04build1",
        "2.63+24.04",
        "2.63+24.04ubuntu0.1",
        "2.63.1+24.04",
        "2.65.3+24.04",
        "2.66.1+24.04",
        "2.67.1+24.04",
        "2.68.5+ubuntu24.04.1",
        "2.71+ubuntu24.04",
        "2.72+ubuntu24.04",
        "2.73+ubuntu24.04",
        "2.73+ubuntu24.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8102-1 fixed a vulnerability in snapd. The update caused a regresision for\nUbuntu 24.04 LTS while installing the package. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\nQualys discovered that snapd incorrectly handled certain operations in the\nsnap\u0027s private /tmp directory. If systemd-tmpfiles is enabled to automatically\nclean up this directory, a local attacker could possibly use this issue to\nre-create the deleted directory, resulting in privilege escalation.\n",
  "id": "USN-8102-2",
  "modified": "2026-04-27T14:11:51Z",
  "published": "2026-03-17T22:33:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8102-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-3888"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/2144728"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "snapd regression",
  "upstream": [
    "UBUNTU-CVE-2026-3888"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.