ALSA-2026:80497 (CVE-2026-90616)

Vulnerability from osv_almalinux – Published: 2026-10-12 00:00 – Updated: 2026-10-13 09:25 – Source website
VLAI
Summary
Important: flatpak security update
Details

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.

Security Fix(es):

  • flatpak: Flatpak: Arbitrary code execution via missing symlink protection (CVE-2026-90616)
  • flatpak: flatpak: Arbitrary write access as root via extra-data extraction (CVE-2026-96275)
  • flatpak: flatpak: Buffer overflow in OCI delta stream path names on 32-bit systems (CVE-2026-96280)
  • flatpak: Flatpak: Local privilege escalation via symlink traversal in revokefs writer (CVE-2026-96808)

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.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "flatpak"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.9-4.el9_8.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "flatpak-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.9-4.el9_8.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "flatpak-libs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.9-4.el9_8.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "flatpak-selinux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.9-4.el9_8.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "flatpak-session-helper"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.9-4.el9_8.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.  \n\nSecurity Fix(es):  \n\n  * flatpak: Flatpak: Arbitrary code execution via missing symlink protection (CVE-2026-90616)\n  * flatpak: flatpak: Arbitrary write access as root via extra-data extraction (CVE-2026-96275)\n  * flatpak: flatpak: Buffer overflow in OCI delta stream path names on 32-bit systems (CVE-2026-96280)\n  * flatpak: Flatpak: Local privilege escalation via symlink traversal in revokefs writer (CVE-2026-96808)\n\n\nFor 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.\n",
  "id": "ALSA-2026:80497",
  "modified": "2026-10-13T09:25:11Z",
  "published": "2026-10-12T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:80497"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-90616"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-96275"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-96280"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-96808"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2532613"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2539416"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2539419"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2539569"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-80497.html"
    }
  ],
  "related": [
    "CVE-2026-90616",
    "CVE-2026-96275",
    "CVE-2026-96280",
    "CVE-2026-96808"
  ],
  "schema_version": "1.7.0",
  "summary": "Important: flatpak security update",
  "upstream": [
    "CVE-2026-90616",
    "CVE-2026-96275",
    "CVE-2026-96280",
    "CVE-2026-96808"
  ]
}



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