diff options
author | Noel Power <noel.power@suse.com> | 2022-10-14 11:53:53 +0100 |
---|---|---|
committer | Jule Anger <janger@samba.org> | 2022-10-19 08:39:17 +0000 |
commit | 7480f9c01d6449e071784b04ea1f8e2a18906d75 (patch) | |
tree | f30a4f26fcb7f78a75213413e33528445a6a0f7b | |
parent | 5383d625cbb3a2c10b4fa18d21e738dabad5d6be (diff) | |
download | samba-7480f9c01d6449e071784b04ea1f8e2a18906d75.tar.gz |
s4/lib/registry: Fix use after free with popt 1.19
popt1.19 fixes a leak that exposes a use as free,
make sure we duplicate return of poptGetArg if
poptFreeContext is called before we use it.
==6357== Command: ./bin/regpatch file
==6357==
Can't load /home/npower/samba-back/INSTALL_DIR/etc/smb.conf - run testparm to debug it
==6357== Syscall param openat(filename) points to unaddressable byte(s)
==6357== at 0x4BFE535: open (in /usr/lib64/libc.so.6)
==6357== by 0x4861432: reg_diff_load (patchfile.c:345)
==6357== by 0x4861CD3: reg_diff_apply (patchfile.c:542)
==6357== by 0x10ADF9: main (regpatch.c:114)
==6357== Address 0x70f79d0 is 0 bytes inside a block of size 5 free'd
==6357== at 0x484617B: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF38B8: poptResetContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x4AF45D4: poptFreeContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ADCF: main (regpatch.c:111)
==6357== Block was alloc'd at
==6357== at 0x48437B4: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF52EE: poptGetNextOpt (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ACBD: main (regpatch.c:79)
==6357==
==6357== Invalid read of size 1
==6357== at 0x4849782: strlen (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4B5D50F: __vfprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4B7E719: __vasprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4AD32F0: __dbgtext_va (debug.c:1904)
==6357== by 0x4AD33F2: dbgtext (debug.c:1925)
==6357== by 0x4861515: reg_diff_load (patchfile.c:353)
==6357== by 0x4861CD3: reg_diff_apply (patchfile.c:542)
==6357== by 0x10ADF9: main (regpatch.c:114)
==6357== Address 0x70f79d0 is 0 bytes inside a block of size 5 free'd
==6357== at 0x484617B: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF38B8: poptResetContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x4AF45D4: poptFreeContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ADCF: main (regpatch.c:111)
==6357== Block was alloc'd at
==6357== at 0x48437B4: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF52EE: poptGetNextOpt (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ACBD: main (regpatch.c:79)
==6357==
==6357== Invalid read of size 1
==6357== at 0x4849794: strlen (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4B5D50F: __vfprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4B7E719: __vasprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4AD32F0: __dbgtext_va (debug.c:1904)
==6357== by 0x4AD33F2: dbgtext (debug.c:1925)
==6357== by 0x4861515: reg_diff_load (patchfile.c:353)
==6357== by 0x4861CD3: reg_diff_apply (patchfile.c:542)
==6357== by 0x10ADF9: main (regpatch.c:114)
==6357== Address 0x70f79d1 is 1 bytes inside a block of size 5 free'd
==6357== at 0x484617B: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF38B8: poptResetContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x4AF45D4: poptFreeContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ADCF: main (regpatch.c:111)
==6357== Block was alloc'd at
==6357== at 0x48437B4: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF52EE: poptGetNextOpt (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ACBD: main (regpatch.c:79)
==6357==
==6357== Invalid read of size 1
==6357== at 0x4B83DD0: _IO_default_xsputn (in /usr/lib64/libc.so.6)
==6357== by 0x4B5D39E: __vfprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4B7E719: __vasprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4AD32F0: __dbgtext_va (debug.c:1904)
==6357== by 0x4AD33F2: dbgtext (debug.c:1925)
==6357== by 0x4861515: reg_diff_load (patchfile.c:353)
==6357== by 0x4861CD3: reg_diff_apply (patchfile.c:542)
==6357== by 0x10ADF9: main (regpatch.c:114)
==6357== Address 0x70f79d0 is 0 bytes inside a block of size 5 free'd
==6357== at 0x484617B: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF38B8: poptResetContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x4AF45D4: poptFreeContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ADCF: main (regpatch.c:111)
==6357== Block was alloc'd at
==6357== at 0x48437B4: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF52EE: poptGetNextOpt (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ACBD: main (regpatch.c:79)
==6357==
==6357== Invalid read of size 1
==6357== at 0x4B83DDF: _IO_default_xsputn (in /usr/lib64/libc.so.6)
==6357== by 0x4B5D39E: __vfprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4B7E719: __vasprintf_internal (in /usr/lib64/libc.so.6)
==6357== by 0x4AD32F0: __dbgtext_va (debug.c:1904)
==6357== by 0x4AD33F2: dbgtext (debug.c:1925)
==6357== by 0x4861515: reg_diff_load (patchfile.c:353)
==6357== by 0x4861CD3: reg_diff_apply (patchfile.c:542)
==6357== by 0x10ADF9: main (regpatch.c:114)
==6357== Address 0x70f79d2 is 2 bytes inside a block of size 5 free'd
==6357== at 0x484617B: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF38B8: poptResetContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x4AF45D4: poptFreeContext (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ADCF: main (regpatch.c:111)
==6357== Block was alloc'd at
==6357== at 0x48437B4: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==6357== by 0x4AF52EE: poptGetNextOpt (in /usr/lib64/libpopt.so.0.0.2)
==6357== by 0x10ACBD: main (regpatch.c:79)
==6357==
Error reading registry patch file `file'
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15205
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri Oct 14 13:38:55 UTC 2022 on sn-devel-184
(cherry picked from commit 7e0e3f47cd67e4cadc101691cd14837f45d9506a)
-rw-r--r-- | source4/lib/registry/tools/regpatch.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/source4/lib/registry/tools/regpatch.c b/source4/lib/registry/tools/regpatch.c index 2be78d143ef..eafaff6cf99 100644 --- a/source4/lib/registry/tools/regpatch.c +++ b/source4/lib/registry/tools/regpatch.c @@ -101,7 +101,7 @@ int main(int argc, char **argv) return 1; } - patch = poptGetArg(pc); + patch = talloc_strdup(mem_ctx, poptGetArg(pc)); if (patch == NULL) { poptPrintUsage(pc, stderr, 0); TALLOC_FREE(mem_ctx); |