60 lines
1.8 KiB
Plaintext
60 lines
1.8 KiB
Plaintext
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BASH PATCH REPORT
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=================
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Bash-Release: 4.4
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Patch-ID: bash44-006
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Bug-Reported-by: <fernando@null-life.com>
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Bug-Reference-ID: <CAEr-gPFPvqheiAeENmMkEwWRd4U=1iqCsYmR3sLdULOqL++_tQ@mail.gmail.com>
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Bug-Reference-URL:
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Bug-Description:
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Out-of-range negative offsets to popd can cause the shell to crash attempting
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to free an invalid memory block.
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Patch (apply with `patch -p0'):
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*** ../bash-4.4-patched/builtins/pushd.def 2016-01-25 13:31:49.000000000 -0500
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--- builtins/pushd.def 2016-10-28 10:46:49.000000000 -0400
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***************
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*** 366,370 ****
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}
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! if (which > directory_list_offset || (directory_list_offset == 0 && which == 0))
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{
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pushd_error (directory_list_offset, which_word ? which_word : "");
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--- 366,370 ----
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}
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! if (which > directory_list_offset || (which < -directory_list_offset) || (directory_list_offset == 0 && which == 0))
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{
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pushd_error (directory_list_offset, which_word ? which_word : "");
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***************
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*** 388,391 ****
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--- 388,396 ----
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of the list into place. */
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i = (direction == '+') ? directory_list_offset - which : which;
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+ if (i < 0 || i > directory_list_offset)
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+ {
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+ pushd_error (directory_list_offset, which_word ? which_word : "");
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+ return (EXECUTION_FAILURE);
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+ }
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free (pushd_directory_list[i]);
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directory_list_offset--;
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*** ../bash-4.4/patchlevel.h 2016-06-22 14:51:03.000000000 -0400
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--- patchlevel.h 2016-10-01 11:01:28.000000000 -0400
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***************
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*** 26,30 ****
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 5
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#endif /* _PATCHLEVEL_H_ */
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--- 26,30 ----
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looks for to find the patch level (for the sccs version string). */
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! #define PATCHLEVEL 6
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#endif /* _PATCHLEVEL_H_ */
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