Ubuntu
tcpdump package

tcpdump crashes with SIGSEGV

Bug #1660499 reported by Christian Brauner
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
tcpdump (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

tcpdump segfaults when run in a LXD apparmor confined container:

  driver: lxc
  driverversion: 2.0.0
  kernel: Linux
  kernelarchitecture: x86_64
  kernelversion: 4.9.0-3-generic
  server: lxd
  serverpid: 13543
  serverversion: "2.8"
  storage: zfs
  storageversion: "5"

dmesg contains:

[235250.646020] audit: type=1400 audit(1485821386.799:380): apparmor="DENIED" operation="file_mmap" namespace="root//lxd-xen1_<var-lib-lxd>" profile="/usr/sbin/tcpdump" name="/usr/sbin/tcpdump" pid=17644 comm="tcpdump" requested_mask="m" denied_mask="m" fsuid=100000 ouid=100000

Revision history for this message
Seth Arnold (seth-arnold) wrote :

This may not be related to lxd but rather 9f834ec18defc369d73ccf9e87a2790bfa05bf46.

Change:

/usr/sbin/tcpdump r,

to:

/usr/sbin/tcpdump rm,

Thanks

Revision history for this message
Marc Deslauriers (mdeslaur) wrote :

I'm pretty sure this is now fixed with the following updates:
https://www.ubuntu.com/usn/usn-3205-1/

I am closing this bug, please feel free to re-open it if it's still an issue.

Thanks!

Changed in tcpdump (Ubuntu):
status: New → Fix Released
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