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OpenAdvisories
High · 8.4 CVE-2019-25656 EUVD-2019-20048GHSA-j848-jmr8-xfgr

R i386 3.5.0 Local Buffer Overflow SEH

Published Apr 5, 2026 · Updated Apr 6, 2026 · Assigned by VulnCheck

Description

R i386 3.5.0 contains a local buffer overflow vulnerability in the GUI Preferences dialog that allows local attackers to trigger a structured exception handler (SEH) overwrite by supplying malicious input. Attackers can craft a payload string in the 'Language for menus and messages' field to overwrite SEH records and achieve code execution with calculator or arbitrary shellcode.

Affected products

VendorProductAffectedFixed
R-Project R i386 3.5.0 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 26.10 r-base No fix yet —
Ubuntu 26.04 LTS r-base No fix yet —
Ubuntu 25.10 r-base No fix yet —
Ubuntu 24.04 LTS r-base No fix yet —
Ubuntu 22.04 LTS r-base No fix yet —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 20.04 LTS r-base No fix yet —
Ubuntu 18.04 LTS r-base No fix yet —
Ubuntu Pro 16.04 LTS r-base No fix yet —
Ubuntu Pro 14.04 LTS r-base No fix yet —

References