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https://gitlab.alpinelinux.org/alpine/aports.git
synced 2025-07-21 02:05:16 +03:00
28 lines
850 B
Diff
28 lines
850 B
Diff
From: Helmut Grohne <helmut@subdivi.de>
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Subject: sphere: avoid integer underflow
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Link: https://talosintelligence.com/vulnerability_reports/TALOS-2021-1434
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Bug: https://sourceforge.net/p/sox/bugs/362/
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Bug-Debian: https://bugs.debian.org/1012138
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--- a/src/sphere.c
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+++ b/src/sphere.c
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@@ -63,7 +63,8 @@
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return (SOX_EOF);
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}
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- header_size -= (strlen(buf) + 1);
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+ bytes_read = strlen(buf);
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+ header_size -= bytes_read >= header_size ? header_size : bytes_read + 1;
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while (strncmp(buf, "end_head", (size_t)8) != 0) {
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if (strncmp(buf, "sample_n_bytes", (size_t)14) == 0)
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@@ -105,7 +106,8 @@
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return (SOX_EOF);
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}
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- header_size -= (strlen(buf) + 1);
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+ bytes_read = strlen(buf);
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+ header_size -= bytes_read >= header_size ? header_size : bytes_read + 1;
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}
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if (!bytes_per_sample)
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