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ruby: Buffer overread vulnerability in StringIO

🗓️ 06 Jun 2024 14:03:07Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Buffer overread in Ruby StringIO allows ungetbyte and ungetc to read past end, making gets return memory value.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.4aarch64ruby3.3.1-2.module+el9.4.0+21859+16f07581ruby-3.3.1-2.module+el9.4.0+21859+16f07581.aarch64.rpm
Red Hat Enterprise Linux9.4i686ruby3.3.1-2.module+el9.4.0+21859+16f07581ruby-3.3.1-2.module+el9.4.0+21859+16f07581.i686.rpm
Red Hat Enterprise Linux9.4ppc64leruby3.3.1-2.module+el9.4.0+21859+16f07581ruby-3.3.1-2.module+el9.4.0+21859+16f07581.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xruby3.3.1-2.module+el9.4.0+21859+16f07581ruby-3.3.1-2.module+el9.4.0+21859+16f07581.s390x.rpm
Red Hat Enterprise Linux9.4x86_64ruby3.3.1-2.module+el9.4.0+21859+16f07581ruby-3.3.1-2.module+el9.4.0+21859+16f07581.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64ruby-bundled-gems3.3.1-2.module+el9.4.0+21859+16f07581ruby-bundled-gems-3.3.1-2.module+el9.4.0+21859+16f07581.aarch64.rpm
Red Hat Enterprise Linux9.4i686ruby-bundled-gems3.3.1-2.module+el9.4.0+21859+16f07581ruby-bundled-gems-3.3.1-2.module+el9.4.0+21859+16f07581.i686.rpm
Red Hat Enterprise Linux9.4ppc64leruby-bundled-gems3.3.1-2.module+el9.4.0+21859+16f07581ruby-bundled-gems-3.3.1-2.module+el9.4.0+21859+16f07581.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xruby-bundled-gems3.3.1-2.module+el9.4.0+21859+16f07581ruby-bundled-gems-3.3.1-2.module+el9.4.0+21859+16f07581.s390x.rpm
Red Hat Enterprise Linux9.4x86_64ruby-bundled-gems3.3.1-2.module+el9.4.0+21859+16f07581ruby-bundled-gems-3.3.1-2.module+el9.4.0+21859+16f07581.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