Issue 56179 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in check_section

Issue 56179 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in check_section

[ClusterFuzz-External via monorail]

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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-2023-02-20
Type: Bug-Security

New issue 56179 by ClusterFuzz-External: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in check_section
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56179

Detailed Report: https://oss-fuzz.com/testcase?key=6538272475316224

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:
  check_section
  dwarf_begin_elf
  load_dw
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_elfutils&range=202302161800:202302181800

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=6538272475316224

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 56179 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in check_section

[evv… via monorail]

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Comment #1 on issue 56179 by evv...@gmail.com: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in check_section
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56179#c1

It's a duplicate of https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56134 as far as I can tell. I'm not sure why it was reported once again.
I opened https://github.com/google/oss-fuzz/issues/9769.

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Issue 56179 in oss-fuzz: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in check_section

[ClusterFuzz-External via monorail]

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Updates:
	Labels: ClusterFuzz-Verified
	Status: Verified

Comment #2 on issue 56179 by ClusterFuzz-External: elfutils:fuzz-libdwfl: Use-of-uninitialized-value in check_section
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56179#c2

ClusterFuzz testcase 6538272475316224 is verified as fixed in https://oss-fuzz.com/revisions?job=libfuzzer_msan_elfutils&range=202302230620:202302231200

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

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