Bug 2488964 (CVE-2026-8357)

Summary:	CVE-2026-8357 libreoffice: LibreOffice Calc: Arbitrary code execution via heap buffer overflow in formula compilation
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A vulnerability has been identified in LibreOffice Calc. An application crash may occur if a user opens a malicious spreadsheet that contains excessively long formulas. Successful exploitation of this vulnerability could result in a denial of service or potentially lead to arbitrary code execution.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2490276
Bug Blocks:

Description OSIDB Bzimport 2026-06-15 18:01:46 UTC

LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.

Comment 3 errata-xmlrpc 2026-07-06 05:14:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:35839 https://access.redhat.com/errata/RHSA-2026:35839

Comment 4 errata-xmlrpc 2026-07-08 18:59:35 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:36832 https://access.redhat.com/errata/RHSA-2026:36832

Comment 5 errata-xmlrpc 2026-07-22 10:53:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:43423 https://access.redhat.com/errata/RHSA-2026:43423

Comment 6 errata-xmlrpc 2026-07-22 11:09:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:43424 https://access.redhat.com/errata/RHSA-2026:43424

Comment 7 errata-xmlrpc 2026-07-22 11:12:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:43461 https://access.redhat.com/errata/RHSA-2026:43461

Comment 8 errata-xmlrpc 2026-07-22 11:15:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:43425 https://access.redhat.com/errata/RHSA-2026:43425

Comment 9 errata-xmlrpc 2026-07-22 11:18:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:43460 https://access.redhat.com/errata/RHSA-2026:43460

Comment 10 errata-xmlrpc 2026-07-27 03:19:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:46386 https://access.redhat.com/errata/RHSA-2026:46386

Comment 11 errata-xmlrpc 2026-07-27 03:31:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:46387 https://access.redhat.com/errata/RHSA-2026:46387