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ruby: Buffer overread vulnerability in StringIO

🗓️ 06 Jun 2024 09:05:04Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Buffer overread in StringIO allows reads past end via ungetbyte and ungetc, causing gets to return memory value.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.4aarch64ruby3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-3.1.5-144.module+el9.4.0+21780+79b7bdb5.aarch64.rpm
Red Hat Enterprise Linux9.4i686ruby3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-3.1.5-144.module+el9.4.0+21780+79b7bdb5.i686.rpm
Red Hat Enterprise Linux9.4ppc64leruby3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-3.1.5-144.module+el9.4.0+21780+79b7bdb5.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xruby3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-3.1.5-144.module+el9.4.0+21780+79b7bdb5.s390x.rpm
Red Hat Enterprise Linux9.4x86_64ruby3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-3.1.5-144.module+el9.4.0+21780+79b7bdb5.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64ruby-bundled-gems3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-bundled-gems-3.1.5-144.module+el9.4.0+21780+79b7bdb5.aarch64.rpm
Red Hat Enterprise Linux9.4i686ruby-bundled-gems3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-bundled-gems-3.1.5-144.module+el9.4.0+21780+79b7bdb5.i686.rpm
Red Hat Enterprise Linux9.4ppc64leruby-bundled-gems3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-bundled-gems-3.1.5-144.module+el9.4.0+21780+79b7bdb5.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xruby-bundled-gems3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-bundled-gems-3.1.5-144.module+el9.4.0+21780+79b7bdb5.s390x.rpm
Red Hat Enterprise Linux9.4x86_64ruby-bundled-gems3.1.5-144.module+el9.4.0+21780+79b7bdb5ruby-bundled-gems-3.1.5-144.module+el9.4.0+21780+79b7bdb5.x86_64.rpm
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06 May 2026 11:56Current
7.4High risk
Vulners AI Score7.4
CVSS 3.19.8
EPSS0.02364
SSVC
6