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Code Issues Releases Activity

avfilter/asrc_sinc: fix leak in config_input()

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In config_input(), fir_to_phase() allocates memory in h[longer], which
would leak if av_calloc() to s->coeffs failed. lpf() allocates memory
in h[0] and h[1], which would leak if fir_to_phase() failed. To fix
this leak, add av_free(h[longer]) in as cleanup code, and replace
return AVERROR* with goto cleanup to prevent from leaks.

Signed-off-by: Lidong Yan <502024330056@smail.nju.edu.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Lidong Yan
2025-06-30 23:01:12 +08:00
committed by Michael Niedermayer
parent 5f62e2de98
commit a4a71b5e9d
1 changed files with 11 additions and 7 deletions
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18
libavfilter/asrc_sinc.c
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@ -329,7 +329,7 @@ static int config_output(AVFilterLink *outlink)
SincContext *s = ctx->priv;
float Fn = s->sample_rate * .5f;
float *h[2];
int i, n, post_peak, longer;
int i, n, post_peak, longer, ret;
outlink->sample_rate = s->sample_rate;
s->pts = 0;
@ -360,9 +360,9 @@ static int config_output(AVFilterLink *outlink)
}
if (s->phase != 50.f) {
int ret = fir_to_phase(s, &h[longer], &n, &post_peak, s->phase);
ret = fir_to_phase(s, &h[longer], &n, &post_peak, s->phase);
if (ret < 0)
return ret;
goto cleanup;
} else {
post_peak = n >> 1;
}
@ -370,17 +370,21 @@ static int config_output(AVFilterLink *outlink)
s->n = 1 << (av_log2(n) + 1);
s->rdft_len = 1 << av_log2(n);
s->coeffs = av_calloc(s->n, sizeof(*s->coeffs));
if (!s->coeffs)
return AVERROR(ENOMEM);
if (!s->coeffs) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
for (i = 0; i < n; i++)
s->coeffs[i] = h[longer][i];
av_free(h[longer]);
av_tx_uninit(&s->tx);
av_tx_uninit(&s->itx);
ret = 0;
return 0;
cleanup:
av_free(h[longer]);
return ret;
}
static av_cold void uninit(AVFilterContext *ctx)