| [c5c522c] | 1 | BASH PATCH REPORT |
|---|
| 2 | ================= |
|---|
| 3 | |
|---|
| 4 | Bash-Release: 4.3 |
|---|
| 5 | Patch-ID: bash43-009 |
|---|
| 6 | |
|---|
| 7 | Bug-Reported-by: Matthias Klose <doko@debian.org> |
|---|
| 8 | Bug-Reference-ID: <53346FC8.6090005@debian.org> |
|---|
| 9 | Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00171.html |
|---|
| 10 | |
|---|
| 11 | Bug-Description: |
|---|
| 12 | |
|---|
| 13 | There is a problem with unsigned sign extension when attempting to reallocate |
|---|
| 14 | the input line when it is fewer than 3 characters long and there has been a |
|---|
| 15 | history expansion. The sign extension causes the shell to not reallocate the |
|---|
| 16 | line, which results in a segmentation fault when it writes past the end. |
|---|
| 17 | |
|---|
| 18 | Patch (apply with `patch -p0'): |
|---|
| 19 | |
|---|
| 20 | *** ../bash-4.3-patched/parse.y 2014-02-11 09:42:10.000000000 -0500 |
|---|
| 21 | --- parse.y 2014-03-27 16:33:29.000000000 -0400 |
|---|
| 22 | *************** |
|---|
| 23 | *** 2425,2429 **** |
|---|
| 24 | if (shell_input_line_terminator != EOF) |
|---|
| 25 | { |
|---|
| 26 | ! if (shell_input_line_size < SIZE_MAX && shell_input_line_len > shell_input_line_size - 3) |
|---|
| 27 | shell_input_line = (char *)xrealloc (shell_input_line, |
|---|
| 28 | 1 + (shell_input_line_size += 2)); |
|---|
| 29 | --- 2425,2429 ---- |
|---|
| 30 | if (shell_input_line_terminator != EOF) |
|---|
| 31 | { |
|---|
| 32 | ! if (shell_input_line_size < SIZE_MAX-3 && (shell_input_line_len+3 > shell_input_line_size)) |
|---|
| 33 | shell_input_line = (char *)xrealloc (shell_input_line, |
|---|
| 34 | 1 + (shell_input_line_size += 2)); |
|---|
| 35 | *** ../bash-4.3-patched/y.tab.c 2014-03-28 11:17:06.000000000 -0400 |
|---|
| 36 | --- y.tab.c 2014-04-07 11:48:31.000000000 -0400 |
|---|
| 37 | *************** |
|---|
| 38 | *** 4737,4741 **** |
|---|
| 39 | if (shell_input_line_terminator != EOF) |
|---|
| 40 | { |
|---|
| 41 | ! if (shell_input_line_size < SIZE_MAX && shell_input_line_len > shell_input_line_size - 3) |
|---|
| 42 | shell_input_line = (char *)xrealloc (shell_input_line, |
|---|
| 43 | 1 + (shell_input_line_size += 2)); |
|---|
| 44 | --- 4737,4741 ---- |
|---|
| 45 | if (shell_input_line_terminator != EOF) |
|---|
| 46 | { |
|---|
| 47 | ! if (shell_input_line_size < SIZE_MAX-3 && (shell_input_line_len+3 > shell_input_line_size)) |
|---|
| 48 | shell_input_line = (char *)xrealloc (shell_input_line, |
|---|
| 49 | 1 + (shell_input_line_size += 2)); |
|---|
| 50 | *** ../bash-4.3/patchlevel.h 2012-12-29 10:47:57.000000000 -0500 |
|---|
| 51 | --- patchlevel.h 2014-03-20 20:01:28.000000000 -0400 |
|---|
| 52 | *************** |
|---|
| 53 | *** 26,30 **** |
|---|
| 54 | looks for to find the patch level (for the sccs version string). */ |
|---|
| 55 | |
|---|
| 56 | ! #define PATCHLEVEL 8 |
|---|
| 57 | |
|---|
| 58 | #endif /* _PATCHLEVEL_H_ */ |
|---|
| 59 | --- 26,30 ---- |
|---|
| 60 | looks for to find the patch level (for the sccs version string). */ |
|---|
| 61 | |
|---|
| 62 | ! #define PATCHLEVEL 9 |
|---|
| 63 | |
|---|
| 64 | #endif /* _PATCHLEVEL_H_ */ |
|---|
