Issue 42877 in oss-fuzz: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module

Issue 42877 in oss-fuzz: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module

[ClusterFuzz-External via monorail]

Status: New
Owner: ----
CC: elfut...@sourceware.org, evv...@gmail.com, izzeem@google.com 
Labels: ClusterFuzz Reproducible Stability-UndefinedBehaviorSanitizer Engine-libfuzzer OS-Linux Security_Severity-Medium Proj-elfutils Reported-2021-12-23
Type: Bug-Security

New issue 42877 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42877

Detailed Report: https://oss-fuzz.com/testcase?key=4756614962348032

Project: elfutils
Fuzzing Engine: libFuzzer
Fuzz Target: fuzz-dwfl-core
Job Type: libfuzzer_ubsan_elfutils
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x7f1c0c58b000
Crash State:
  dwfl_segment_report_module
  dwfl_core_file_report
  fuzz-dwfl-core.c
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_elfutils&range=202112210605:202112211200

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=4756614962348032

Issue filed automatically.

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Issue 42877 in oss-fuzz: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module

[ClusterFuzz-External via monorail]

Updates:
	Labels: Fuzz-Blocker

Comment #1 on issue 42877 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42877#c1

This crash occurs very frequently on linux platform and is likely preventing the fuzzer fuzz-dwfl-core from making much progress. Fixing this will allow more bugs to be found.

If this is incorrect, please file a bug on https://github.com/google/oss-fuzz/issues/new

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Re: Issue 42877 in oss-fuzz: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module

[Mark Wielaard]

Hi,

On Thu, Dec 23, 2021 at 10:01:35AM -0800, ClusterFuzz-External via monorail via Elfutils-devel wrote:
> Status: New
> Owner: ----
> CC: elfut...@sourceware.org, evv...@gmail.com, izzeem@google.com 
> Labels: ClusterFuzz Reproducible Stability-UndefinedBehaviorSanitizer Engine-libfuzzer OS-Linux Security_Severity-Medium Proj-elfutils Reported-2021-12-23
> Type: Bug-Security
> 
> New issue 42877 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module
> https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42877
> 
> Detailed Report: https://oss-fuzz.com/testcase?key=4756614962348032

Thanks for the report, but this is not enough information to reproduce
and fix the issue. Please make the detailed reports public so we can
act on this report.

Cheers,

Mark

Issue 42877 in oss-fuzz: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module

[ClusterFuzz-External via monorail]

Updates:
	Labels: ClusterFuzz-Verified
	Status: Verified

Comment #2 on issue 42877 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Crash in dwfl_segment_report_module
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42877#c2

ClusterFuzz testcase 4756614962348032 is verified as fixed in https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_elfutils&range=202201031800:202201040000

If this is incorrect, please file a bug on https://github.com/google/oss-fuzz/issues/new

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