Bug 1297807
| Summary: | Tcpdump segfaults with --help option on ppc64 | ||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | Jaroslav Aster <jaster> | ||||
| Component: | tcpdump | Assignee: | Luboš Uhliarik <luhliari> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Jaroslav Aster <jaster> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 6.7 | CC: | msekleta, thozza | ||||
| Target Milestone: | rc | Keywords: | Patch | ||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | tcpdump-4.0.0-9.20090921gitdf3cb4.2.el6 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | |||||||
| : | 1297812 (view as bug list) | Environment: | |||||
| Last Closed: | 2016-05-10 21:15:41 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 1113955 [details]
Patch which fixes this issue
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-0831.html |
Description of problem: Tcpdump segfaults with --help option on ppc64. The issue is in getopt_long function and bad parameter with list of possible options which is not properly terminated. # ltrace tcpdump --help (0x80086a2a40, 0, 1, 0, 0xfffffffffeff0000) = 0x80086a2a40 __libc_start_main(2, 0xfffd41c5498, 0xfffd41c54b0, 0xfffd41c55d8, 0x80086a03f0 <unfinished ...> strrchr("tcpdump", '/') = NULL getopt_long(2, 0xfffd41c5498, "aAB:c:C:dDeE:fF:G:i:Ij:JKlLm:M:n"..., 0x100cf248, NULL <unfinished ...> --- SIGSEGV (Segmentation fault) --- +++ killed by SIGSEGV +++ Coredump appears only on ppc64, but the code is the same for all architectures, so the fact there is no segfault on the other architectures is coincidence. Version-Release number of selected component (if applicable): tcpdump-4.0.0-8.20090921gitdf3cb4.2.el6 How reproducible: 100% on ppc64 Steps to Reproduce: 1. Run command tpcdump --help on ppc64. # tcpdump --help Segmentation fault (core dumped) Actual results: Segfault. Expected results: No segfault.