diff options
| author | Ian Lance Taylor <iant@golang.org> | 2025-08-24 13:17:56 -0700 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2025-08-27 19:46:19 -0700 |
| commit | 765905e3bd13dcb048388890dba2ea47f6e58711 (patch) | |
| tree | f09851359b10624254773eaedd45d2fd763e7255 /src/debug/elf | |
| parent | 2ee4b31242e426df757aa09450b744e0af8cb08d (diff) | |
| download | go-765905e3bd13dcb048388890dba2ea47f6e58711.tar.xz | |
debug/elf: don't panic if symtab too small
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
For #47653
Fixes #75130
Change-Id: Ie6015564bb98334377383bbc16d79119dc4e36f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/698855
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Florian Lehner <lehner.florian86@gmail.com>
Diffstat (limited to 'src/debug/elf')
| -rw-r--r-- | src/debug/elf/file.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/debug/elf/file.go b/src/debug/elf/file.go index 89bd70b5b2..50452b5bef 100644 --- a/src/debug/elf/file.go +++ b/src/debug/elf/file.go @@ -692,6 +692,9 @@ func (f *File) getSymbols64(typ SectionType) ([]Symbol, []byte, error) { if len(data)%Sym64Size != 0 { return nil, nil, errors.New("length of symbol section is not a multiple of Sym64Size") } + if len(data) == 0 { + return nil, nil, ErrNoSymbols + } strdata, err := f.stringTable(symtabSection.Link) if err != nil { |