[Bug 2069821] Re: [VROC] [Ub 24.04] mdadm: buffer overflow detected

[Simon Chopin]

** Also affects: mdadm (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: mdadm (Ubuntu Oracular)
   Importance: Undecided
     Assignee: Hector CAO (hectorcao)
       Status: In Progress

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Title:
  [VROC] [Ub 24.04] mdadm: buffer overflow detected

Status in mdadm package in Ubuntu:
  In Progress
Status in mdadm source package in Noble:
  New
Status in mdadm source package in Oracular:
  In Progress

Bug description:
  Mdadm throws buffer-overflow sometimes, it depends on the building environment.
  It happens when mdadm is built with FORFTIFY_SOURCE=3 (as it is done in Ubuntu 24.04).

  Buffer-overflow is detected for many commands in this case:
  - mdadm --detail-pl
  - mdadm -CR /dev/md0 -l1 -n2 /dev/nvme0n1 /dev/nvme1n1
  *** buffer overflow detected ***: terminated
  Aborted (core dumped)

  It is fixed in mdadm upstream - please apply this patch to mdadm package and rebuilt it.
  https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/commit/?id=827e1870f320545796d907f50af594e901399417

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