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Fix unpack of PackLinuxI386 for upx version 11

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Old b_info without .b_method
https://github.com/upx/upx/issues/942
        modified:   p_unix.cpp
This commit is contained in:
John Reiser 2025-11-25 04:29:52 -08:00
parent f83b7690e5
commit 7a46365296
1 changed files with 5 additions and 1 deletions
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6
src/p_unix.cpp
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@ -658,7 +658,11 @@ void PackUnix::unpack(OutputFile *fo)
fi->readx(&bhdr, szb_info); fi->readx(&bhdr, szb_info);
ph.u_len = sz_unc = get_te32(&bhdr.sz_unc); ph.u_len = sz_unc = get_te32(&bhdr.sz_unc);
ph.c_len = sz_cpr = get_te32(&bhdr.sz_cpr); ph.c_len = sz_cpr = get_te32(&bhdr.sz_cpr);
ph.set_method(bhdr.b_method); if (szb_info < sizeof(b_info)) { // some upx version 11
bhdr.b_method = ph.method;
bhdr.b_ftid = ph.filter;
bhdr.b_cto8 = ph.filter_cto;
}
if (sz_unc == 0) // uncompressed size 0 -> EOF if (sz_unc == 0) // uncompressed size 0 -> EOF
{ {