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[Bug 1960387] Re: fprintd crashed with SIGSEGV in log_v() from usbi_log() from libusb_unref_device()

To: debcrafters-packages@xxxxxxxxxxxxxxxxxxx
From: Sebastien Bacher <1960387@xxxxxxxxxxxxxxxxxx>
Date: Fri, 19 Sep 2025 08:49:36 -0000
Reply-to: Bug 1960387 <1960387@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

** Changed in: libusb (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1960387

Title:
  fprintd crashed with SIGSEGV in log_v() from usbi_log() from
  libusb_unref_device()

Status in libusb:
  Fix Released
Status in fprintd package in Ubuntu:
  Won't Fix
Status in libusb package in Ubuntu:
  Fix Released

Bug description:
  +

  ProblemType: Crash
  DistroRelease: Ubuntu 22.04
  Package: fprintd 1.94.1-1
  ProcVersionSignature: Ubuntu 5.15.0-18.18-generic 5.15.12
  Uname: Linux 5.15.0-18-generic x86_64
  ApportVersion: 2.20.11-0ubuntu76
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Mon Feb  7 21:58:32 2022
  ExecutablePath: /usr/libexec/fprintd
  InstallationDate: Installed on 2021-12-21 (50 days ago)
  InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
  ProcCmdline: /usr/libexec/fprintd
  ProcEnviron:
   LANG=ru_RU.UTF-8
   PATH=(custom, no user)
  SegvAnalysis:
   Segfault happened at: 0x7fd8a7a3855f:	call   *%rax
   PC (0x7fd8a7a3855f) ok
   source "*%rax" (0xd86d54af5d1db0f9) not located in a known VMA region (needed readable region)!
   destination "(%rsp)" (0x7ffdceacc590) ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: fprintd
  StacktraceTop:
   ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
   ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
   libusb_unref_device () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
   ?? () from /lib/x86_64-linux-gnu/libgusb.so.2
   g_object_unref () from /lib/x86_64-linux-gnu/libgobject-2.0.so.0
  Title: fprintd crashed with SIGSEGV in libusb_unref_device()
  UpgradeStatus: Upgraded to jammy on 2022-01-16 (23 days ago)
  UserGroups: N/A
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