Issue 45706 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in process_file

Issue 45706 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in process_file

[ClusterFuzz-External via monorail]

Status: New
Owner: ----
CC: elfut...@sourceware.org, da...@adalogics.com, evv...@gmail.com, izzeem@google.com 
Labels: ClusterFuzz Reproducible Stability-Memory-MemorySanitizer Engine-libfuzzer OS-Linux Security_Severity-Medium Proj-elfutils Reported-2022-03-18
Type: Bug-Security

New issue 45706 by ClusterFuzz-External: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in process_file
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=45706

Detailed Report: https://oss-fuzz.com/testcase?key=5736328928559104

Project: elfutils
Fuzzing Engine: libFuzzer
Fuzz Target: fuzz-libdwfl
Job Type: libfuzzer_msan_elfutils
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  process_file
  process_file
  dwfl_report_offline
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_elfutils&range=202203161800:202203170000

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5736328928559104

Issue filed automatically.

See https://google.github.io/oss-fuzz/advanced-topics/reproducing for instructions to reproduce this bug locally.
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Issue 45706 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in process_file

[evv… via monorail]

Comment #1 on issue 45706 by evv...@gmail.com: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in process_file
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=45706#c1

It's a false positive. https://github.com/google/oss-fuzz/pull/7422 should fix it.

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Issue 45706 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in process_file

[ClusterFuzz-External via monorail]

Updates:
	Labels: ClusterFuzz-Verified
	Status: Verified

Comment #2 on issue 45706 by ClusterFuzz-External: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in process_file
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=45706#c2

ClusterFuzz testcase 5736328928559104 is verified as fixed in https://oss-fuzz.com/revisions?job=libfuzzer_msan_elfutils&range=202203230000:202203230602

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

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