[Bug 2067276] Re: Extremely slow regex searches on files with very long lines

[Launchpad Bug Tracker]

This bug was fixed in the package less - 668-1

---------------
less (668-1) sid; urgency=medium

  * new upstream release
    - CVE-2024-32487 fixed in v654, drop patches (#1068938, #1069681)
    - more can go backwards (closes: #655926)
    - fix build failure on GNU/Hurd (closes: #1060420)
    - fix incorrect handling of UTF-8 chars in prompts (closes: #1083280)
    - exit code 1 with LESSOPEN if stdin is /dev/null (closes: #1073071)
    - extremely slow regex searches on very long lines (lp: #2067276)
  * d/p/less-is-more-434417: update upstream patch status
  * d/control: switch to debhelper 13 compatibility level
  * d/control: comply to standards version 4.7.2
  * d/copyright: update
  * d/u/signing-key.asc: rearmor

 -- Milan Kupcevic <milan at debian.org>  Sun, 06 Apr 2025 01:23:51 -0400

** Changed in: less (Ubuntu)
       Status: Triaged => Fix Released

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2024-32487

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https://bugs.launchpad.net/bugs/2067276

Title:
  Extremely slow regex searches on files with very long lines

Status in less package in Ubuntu:
  Fix Released

Bug description:
  Regex searches on files with very long lines are extremely slow.
  During the search (can take up to an hour) ^C and ^Z are not working.

  Older versions (less-487 on ubuntu-18.04 and less-530 from opensuse
  leap-15.1) find same regex on same file within one second.

  24.04 affected as well as 22.04.

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