diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/header.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 77035d9b138c..993e20debd5c 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -63,6 +63,7 @@ #include <event-parse.h> #endif +#define MAX_GROUP_DESC 32768 #define MAX_NUMA_NODES 4096 #define MAX_PMU_MAPPINGS 4096 #define MAX_SCHED_DOMAINS 64 @@ -3132,12 +3133,25 @@ static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused) if (do_read_u32(ff, &nr_groups)) return -1; - env->nr_groups = nr_groups; if (!nr_groups) { pr_debug("group desc not available\n"); return 0; } + if (nr_groups > MAX_GROUP_DESC) { + pr_err("Invalid HEADER_GROUP_DESC: nr_groups (%u) > %u\n", + nr_groups, MAX_GROUP_DESC); + return -1; + } + + if (ff->size < sizeof(u32) + nr_groups * 3 * sizeof(u32)) { + pr_err("Invalid HEADER_GROUP_DESC: section too small (%zu) for %u groups\n", + ff->size, nr_groups); + return -1; + } + + env->nr_groups = nr_groups; + desc = calloc(nr_groups, sizeof(*desc)); if (!desc) return -1; |