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| author | Ian Rogers <irogers@google.com> | 2019-10-26 05:56:44 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-11-07 12:30:18 +0100 |
| commit | 5c65b1c0842f9daddc6aec4bdb4b5d898006be19 (patch) | |
| tree | 5a2de128a1859ed7d05f983c1c96043323e8970c /tools/perf | |
| parent | perf machine: Add kernel_dso() method (diff) | |
| download | linux-5c65b1c0842f9daddc6aec4bdb4b5d898006be19.tar.xz linux-5c65b1c0842f9daddc6aec4bdb4b5d898006be19.zip | |
perf annotate: Fix heap overflow
Fix expand_tabs that copies the source lines '\0' and then appends
another '\0' at a potentially out of bounds address.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20191026035644.217548-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/annotate.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index ef1866a902c4..bee0fee122f8 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1892,7 +1892,7 @@ static char *expand_tabs(char *line, char **storage, size_t *storage_len) } /* Expand the last region. */ - len = line_len + 1 - src; + len = line_len - src; memcpy(&new_line[dst], &line[src], len); dst += len; new_line[dst] = '\0'; |