author | Patrick Einheber <patrick.einheber@oracle.com> |
Wed, 12 Oct 2016 08:38:46 -0700 | |
changeset 7093 | a50590d00730 |
parent 5518 | c47fe0edc204 |
permissions | -rw-r--r-- |
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BASH PATCH REPORT |
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================= |
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Bash-Release: 4.3 |
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Patch-ID: bash43-009 |
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Bug-Reported-by: Matthias Klose <[email protected]> |
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Bug-Reference-ID: <[email protected]> |
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Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00171.html |
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Bug-Description: |
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There is a problem with unsigned sign extension when attempting to reallocate |
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the input line when it is fewer than 3 characters long and there has been a |
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history expansion. The sign extension causes the shell to not reallocate the |
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line, which results in a segmentation fault when it writes past the end. |
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Patch (apply with `patch -p0'): |
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*** ../bash-4.3-patched/parse.y 2014-02-11 09:42:10.000000000 -0500 |
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--- parse.y 2014-03-27 16:33:29.000000000 -0400 |
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*************** |
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*** 2425,2429 **** |
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if (shell_input_line_terminator != EOF) |
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{ |
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! if (shell_input_line_size < SIZE_MAX && shell_input_line_len > shell_input_line_size - 3) |
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shell_input_line = (char *)xrealloc (shell_input_line, |
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1 + (shell_input_line_size += 2)); |
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--- 2425,2429 ---- |
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if (shell_input_line_terminator != EOF) |
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{ |
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! if (shell_input_line_size < SIZE_MAX-3 && (shell_input_line_len+3 > shell_input_line_size)) |
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shell_input_line = (char *)xrealloc (shell_input_line, |
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1 + (shell_input_line_size += 2)); |
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*** ../bash-4.3-patched/y.tab.c 2014-03-28 11:17:06.000000000 -0400 |
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--- y.tab.c 2014-04-07 11:48:31.000000000 -0400 |
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*************** |
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*** 4737,4741 **** |
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if (shell_input_line_terminator != EOF) |
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{ |
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! if (shell_input_line_size < SIZE_MAX && shell_input_line_len > shell_input_line_size - 3) |
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shell_input_line = (char *)xrealloc (shell_input_line, |
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1 + (shell_input_line_size += 2)); |
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--- 4737,4741 ---- |
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if (shell_input_line_terminator != EOF) |
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{ |
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! if (shell_input_line_size < SIZE_MAX-3 && (shell_input_line_len+3 > shell_input_line_size)) |
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shell_input_line = (char *)xrealloc (shell_input_line, |
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1 + (shell_input_line_size += 2)); |
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*** ../bash-4.3/patchlevel.h 2012-12-29 10:47:57.000000000 -0500 |
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--- patchlevel.h 2014-03-20 20:01:28.000000000 -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 8 |
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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 9 |
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#endif /* _PATCHLEVEL_H_ */ |