ALSA-2026:68549

Vulnerability from osv_almalinux – Published: 2026-09-17 00:00 – Updated: 2026-09-23 10:20 – Source website
VLAI
Summary
Important: firefox security update
Details

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

  • firefox: thunderbird: Privilege escalation in the DOM: Workers component (CVE-2026-16365)
  • firefox: thunderbird: Sandbox escape in the Remote Settings Client component (CVE-2026-75874)
  • firefox: Sandbox escape due to use-after-free in the DOM: Security component (CVE-2026-84121)
  • firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 (CVE-2026-84145)
  • firefox: Sandbox escape due to use-after-free in the DOM: Navigation component (CVE-2026-84119)
  • firefox: Use-after-free in the Audio/Video component (CVE-2026-84120)
  • firefox: Privilege escalation due to invalid pointer in the Graphics component (CVE-2026-84131)
  • firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-84124)
  • firefox: Use-after-free in the Audio/Video component (CVE-2026-84122)
  • firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 (CVE-2026-84143)

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:8",
        "name": "firefox"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "140.15.0-1.el8_10.alma.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.  \n\nSecurity Fix(es):  \n\n  * firefox: thunderbird: Privilege escalation in the DOM: Workers component (CVE-2026-16365)\n  * firefox: thunderbird: Sandbox escape in the Remote Settings Client component (CVE-2026-75874)\n  * firefox: Sandbox escape due to use-after-free in the DOM: Security component (CVE-2026-84121)\n  * firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 (CVE-2026-84145)\n  * firefox: Sandbox escape due to use-after-free in the DOM: Navigation component (CVE-2026-84119)\n  * firefox: Use-after-free in the Audio/Video component (CVE-2026-84120)\n  * firefox: Privilege escalation due to invalid pointer in the Graphics component (CVE-2026-84131)\n  * firefox: Use-after-free in the DOM: Core \u0026 HTML component (CVE-2026-84124)\n  * firefox: Use-after-free in the Audio/Video component (CVE-2026-84122)\n  * firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 (CVE-2026-84143)\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-2026:68549",
  "modified": "2026-09-23T10:20:16Z",
  "published": "2026-09-17T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:68549"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-16365"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-75874"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84119"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84120"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84121"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84122"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84124"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84131"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84143"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-84145"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2503504"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2517832"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2526753"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2526760"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2526764"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2526765"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2526767"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2526778"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2526781"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-68549.html"
    }
  ],
  "related": [
    "CVE-2026-16365",
    "CVE-2026-75874",
    "CVE-2026-84121",
    "CVE-2026-84145",
    "CVE-2026-84119",
    "CVE-2026-84120",
    "CVE-2026-84131",
    "CVE-2026-84124",
    "CVE-2026-84122",
    "CVE-2026-84143"
  ],
  "summary": "Important: firefox security update"
}



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