|
|
Log in / Subscribe / Register

SUSE alert SUSE-SU-2026:2583-1 (firefox)



From:
              SLE-SECURITY-UPDATES <null@suse.de>


To:
              sle-security-updates@lists.suse.com


Subject:
              SUSE-SU-2026:2583-1: important: Security update for MozillaFirefox


Date:
              Tue, 23 Jun 2026 20:36:45 -0000


Message-ID:
              <178224700542.237.4483933219766169924@a3d737749a5b>


# Security update for MozillaFirefox

Announcement ID: SUSE-SU-2026:2583-1  
Release Date: 2026-06-23T13:27:27Z  
Rating: important  
References:

  * bsc#1268071

  
Cross-References:

  * CVE-2026-12289
  * CVE-2026-12290
  * CVE-2026-12291
  * CVE-2026-12292
  * CVE-2026-12294
  * CVE-2026-12295
  * CVE-2026-12296
  * CVE-2026-12297
  * CVE-2026-12298
  * CVE-2026-12299
  * CVE-2026-12302
  * CVE-2026-12304
  * CVE-2026-12305
  * CVE-2026-12306
  * CVE-2026-12307
  * CVE-2026-12308
  * CVE-2026-12309
  * CVE-2026-12310
  * CVE-2026-12311
  * CVE-2026-12312
  * CVE-2026-12313
  * CVE-2026-12314
  * CVE-2026-12315
  * CVE-2026-12324
  * CVE-2026-12325
  * CVE-2026-12327
  * CVE-2026-12328
  * CVE-2026-12329
  * CVE-2026-12330

  
CVSS scores:

  * CVE-2026-12289 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-12290 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-12290 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-12291 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-12291 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-12292 ( SUSE ):  6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-12292 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-12294 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-12294 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-12295 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-12295 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-12296 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-12296 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-12297 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-12297 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
  * CVE-2026-12298 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-12298 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-12299 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-12299 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-12302 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-12302 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-12304 ( SUSE ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-12304 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-12305 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-12305 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-12306 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-12306 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-12307 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-12307 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-12308 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-12308 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-12309 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-12309 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-12310 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-12310 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-12311 ( SUSE ):  4.7 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
  * CVE-2026-12311 ( NVD ):  4.7 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
  * CVE-2026-12312 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-12312 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-12313 ( SUSE ):  4.7 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
  * CVE-2026-12313 ( NVD ):  4.7 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
  * CVE-2026-12314 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-12314 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-12315 ( SUSE ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-12315 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-12324 ( SUSE ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-12324 ( NVD ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-12325 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-12325 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-12327 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-12327 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-12328 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-12328 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-12329 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-12329 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-12330 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-12330 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves 29 vulnerabilities can now be installed.

## Description:

This update for MozillaFirefox fixes the following issues:

Update to Firefox 140.12.0 ESR (MFSA 2026-58, bsc#1268071):

  * CVE-2026-12289: Privilege escalation in the Graphics: WebRender component.
  * CVE-2026-12290: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12291: Use-after-free in the Networking: HTTP component.
  * CVE-2026-12292: Incorrect boundary conditions in the Web Audio component.
  * CVE-2026-12294: Sandbox escape in the DOM: Workers component.
  * CVE-2026-12295: Sandbox escape in the DOM: Navigation component.
  * CVE-2026-12296: Sandbox escape in the Security: Process Sandboxing
    component.
  * CVE-2026-12297: Sandbox escape due to incorrect boundary conditions in the
    Networking component.
  * CVE-2026-12298: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12299: JIT miscompilation in the DOM: Core & HTML component.
  * CVE-2026-12302: Mitigation bypass in the DOM: Security component.
  * CVE-2026-12304: Same-origin policy bypass in the Networking: Cookies
    component.
  * CVE-2026-12305: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12306: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12307: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12308: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12309: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12310: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12311: Information disclosure, sandbox escape in the Security:
    Process Sandboxing component.
  * CVE-2026-12312: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12313: Information disclosure, sandbox escape in the Security:
    Process Sandboxing component.
  * CVE-2026-12314: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12315: Mitigation bypass in the DOM: Security component.
  * CVE-2026-12324: Incorrect boundary conditions in the Graphics: CanvasWebGL
    component.
  * CVE-2026-12325: Denial-of-service in the Graphics: ImageLib component.
  * CVE-2026-12327: Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird
    ESR 140.12, Firefox 152 and Thunderbird 152.
  * CVE-2026-12328: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR
    140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152.
  * CVE-2026-12329: Memory safety bug fixed in Firefox ESR 140.12.
  * CVE-2026-12330: Incorrect boundary conditions in the Internationalization
    component.

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2583=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2583=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * MozillaFirefox-translations-common-140.12.0-112.321.1
    * MozillaFirefox-debugsource-140.12.0-112.321.1
    * MozillaFirefox-140.12.0-112.321.1
    * MozillaFirefox-debuginfo-140.12.0-112.321.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    * MozillaFirefox-devel-140.12.0-112.321.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * MozillaFirefox-translations-common-140.12.0-112.321.1
    * MozillaFirefox-debugsource-140.12.0-112.321.1
    * MozillaFirefox-140.12.0-112.321.1
    * MozillaFirefox-debuginfo-140.12.0-112.321.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    * MozillaFirefox-devel-140.12.0-112.321.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-12289.html
  * https://www.suse.com/security/cve/CVE-2026-12290.html
  * https://www.suse.com/security/cve/CVE-2026-12291.html
  * https://www.suse.com/security/cve/CVE-2026-12292.html
  * https://www.suse.com/security/cve/CVE-2026-12294.html
  * https://www.suse.com/security/cve/CVE-2026-12295.html
  * https://www.suse.com/security/cve/CVE-2026-12296.html
  * https://www.suse.com/security/cve/CVE-2026-12297.html
  * https://www.suse.com/security/cve/CVE-2026-12298.html
  * https://www.suse.com/security/cve/CVE-2026-12299.html
  * https://www.suse.com/security/cve/CVE-2026-12302.html
  * https://www.suse.com/security/cve/CVE-2026-12304.html
  * https://www.suse.com/security/cve/CVE-2026-12305.html
  * https://www.suse.com/security/cve/CVE-2026-12306.html
  * https://www.suse.com/security/cve/CVE-2026-12307.html
  * https://www.suse.com/security/cve/CVE-2026-12308.html
  * https://www.suse.com/security/cve/CVE-2026-12309.html
  * https://www.suse.com/security/cve/CVE-2026-12310.html
  * https://www.suse.com/security/cve/CVE-2026-12311.html
  * https://www.suse.com/security/cve/CVE-2026-12312.html
  * https://www.suse.com/security/cve/CVE-2026-12313.html
  * https://www.suse.com/security/cve/CVE-2026-12314.html
  * https://www.suse.com/security/cve/CVE-2026-12315.html
  * https://www.suse.com/security/cve/CVE-2026-12324.html
  * https://www.suse.com/security/cve/CVE-2026-12325.html
  * https://www.suse.com/security/cve/CVE-2026-12327.html
  * https://www.suse.com/security/cve/CVE-2026-12328.html
  * https://www.suse.com/security/cve/CVE-2026-12329.html
  * https://www.suse.com/security/cve/CVE-2026-12330.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1268071





Attachment: None (type=text/html)

(HTML attachment elided)
to post comments


Copyright © 2026, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds