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CVE-2026-34743
Linux Debian vulnerability analysis and mitigation

XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.


SourceNVD

Related Linux Debian vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-34827HIGH7.5
  • RubyRuby
  • ruby-rack
NoYesApr 02, 2026
CVE-2026-34835MEDIUM4.8
  • RubyRuby
  • ruby-rack
NoYesApr 02, 2026
CVE-2026-32762MEDIUM4.8
  • RubyRuby
  • ruby-rack
NoYesApr 02, 2026
CVE-2026-34743LOW1.7
  • Linux DebianLinux Debian
  • xz-utils
NoYesApr 02, 2026
CVE-2026-27456N/AN/A
  • Linux DebianLinux Debian
  • util-linux
NoNoApr 03, 2026

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