Issue 46095 in oss-fuzz: elfutils:fuzz-libelf: Use-of-uninitialized-value in elf_compress_gnu

Issue 46095 in oss-fuzz: elfutils:fuzz-libelf: Use-of-uninitialized-value in elf_compress_gnu

[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-2022-03-28
Type: Bug-Security

New issue 46095 by ClusterFuzz-External: elfutils:fuzz-libelf: Use-of-uninitialized-value in elf_compress_gnu
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46095

Detailed Report: https://oss-fuzz.com/testcase?key=6467719510228992

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

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  elf_compress_gnu
  fuzz_logic_one
  fuzz-libelf.c
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_msan_elfutils&range=202203240610:202203241200

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=6467719510228992

Issue filed automatically.

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Issue 46095 in oss-fuzz: elfutils:fuzz-libelf: Use-of-uninitialized-value in elf_compress_gnu

[evv… via monorail]

Comment #1 on issue 46095 by evv...@gmail.com: elfutils:fuzz-libelf: Use-of-uninitialized-value in elf_compress_gnu
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46095#c1

It was reported in https://sourceware.org/bugzilla/show_bug.cgi?id=29000 as well. To avoid duplicates like this the fuzz target should probably be trimmed a bit: https://github.com/google/oss-fuzz/pull/7395#issuecomment-1079246630

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Issue 46095 in oss-fuzz: elfutils:fuzz-libelf: Use-of-uninitialized-value in elf_compress_gnu

[ClusterFuzz-External via monorail]

Updates:
	Labels: ClusterFuzz-Verified
	Status: Verified

Comment #2 on issue 46095 by ClusterFuzz-External: elfutils:fuzz-libelf: Use-of-uninitialized-value in elf_compress_gnu
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46095#c2

ClusterFuzz testcase 6467719510228992 is verified as fixed in https://oss-fuzz.com/revisions?job=libfuzzer_msan_elfutils&range=202203300608:202203301200

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

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