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68 lines
2.6 KiB
68 lines
2.6 KiB
BASH PATCH REPORT
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=================
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Bash-Release: 5.0
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Patch-ID: bash50-008
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Bug-Reported-by: Michael Albinus <michael.albinus@gmx.de>
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Bug-Reference-ID: <87bm36k3kz.fsf@gmx.de>
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Bug-Reference-URL: https://lists.gnu.org/archive/html/bug-bash/2019-02/msg00111.html
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Bug-Description:
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When HISTSIZE is set to 0, history expansion can leave the history length
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set to an incorrect value, leading to subsequent attempts to access invalid
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memory.
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Patch (apply with `patch -p0'):
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*** ../bash-5.0-patched/bashhist.c 2018-07-05 22:41:14.000000000 -0400
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--- bashhist.c 2019-02-20 16:20:04.000000000 -0500
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***************
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*** 561,573 ****
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if (!history_expansion_inhibited && history_expansion && history_expansion_p (line))
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{
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/* If we are expanding the second or later line of a multi-line
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command, decrease history_length so references to history expansions
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in these lines refer to the previous history entry and not the
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current command. */
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if (history_length > 0 && command_oriented_history && current_command_first_line_saved && current_command_line_count > 1)
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history_length--;
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expanded = history_expand (line, &history_value);
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if (history_length >= 0 && command_oriented_history && current_command_first_line_saved && current_command_line_count > 1)
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! history_length++;
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if (expanded)
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--- 561,576 ----
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if (!history_expansion_inhibited && history_expansion && history_expansion_p (line))
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{
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+ int old_len;
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+
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/* If we are expanding the second or later line of a multi-line
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command, decrease history_length so references to history expansions
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in these lines refer to the previous history entry and not the
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current command. */
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+ old_len = history_length;
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if (history_length > 0 && command_oriented_history && current_command_first_line_saved && current_command_line_count > 1)
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history_length--;
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expanded = history_expand (line, &history_value);
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if (history_length >= 0 && command_oriented_history && current_command_first_line_saved && current_command_line_count > 1)
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! history_length = old_len;
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if (expanded)
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*** ../bash-5.0/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 7
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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 8
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#endif /* _PATCHLEVEL_H_ */
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