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Fix unbounded writes

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This commit is contained in:
Martin Lund 2024-06-15 14:59:31 +02:00
parent 6ec2ac19d0
commit be4fc0908f
3 changed files with 3 additions and 11 deletions
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2
src/xymodem.c
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@ -688,7 +688,7 @@ int xymodem_send(int sio, const char *filename, modem_mode_t mode)
rc = -1;
if (strlen(filename) > 977) break; /* hdr block overrun */
p = stpcpy(hdr, filename) + 1;
p = stpncpy(hdr, filename, 1024) + 1;
p += sprintf(p, "%ld %lo %o", len, stat.st_mtime, stat.st_mode);
if (xmodem_1k(sio, hdr, p - hdr, 0) < 0) break; /* hdr with metadata */