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Sören Tempel fa52ac9781 ash: don't read past end of var in subvareval for bash substitutions 
Without this patch, BusyBox handles bash pattern substitutions without
a terminating '/' character incorrectly.

Consider the following shell script:

	_bootstrapver=5.0.211-r0
	_referencesdir="/usr/${_bootstrapver/-*}/Sources"
	echo $_referencesdir

This should output `/usr/5.0.211/Sources`. However, without this patch
it instead outputs `/usr/5.0.211Sources`. This is due to the fact that
BusyBox expects the bash pattern substitutions to always be terminated
with a '/' (at least in this part of subvareval) and thus reads passed
the substitution itself and consumes the '/' character which is part of
the literal string. If there is no '/' after the substitution then
BusyBox might perform an out-of-bounds read under certain circumstances.

When replacing the bash pattern substitution with `${_bootstrapver/-*/}`,
or with this patch applied, ash outputs the correct value.

Signed-off-by: Sören Tempel <soeren@soeren-tempel.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-03-01 08:47:43 +01:00
..
empty.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
empty.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
glob_and_vars.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
glob_and_vars.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
param_expand_alt2.right
ash: parser: Allow newlines within parameter substitution
2018-04-11 12:39:18 +02:00
param_expand_alt2.tests
ash: parser: Allow newlines within parameter substitution
2018-04-11 12:39:18 +02:00
param_expand_alt.right
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
param_expand_alt.tests
shell: remove ${#+} tests, it is not a valid construct
2017-07-26 00:30:02 +02:00
param_expand_assign.right
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
param_expand_assign.tests
ash: add a few tests from hush-vars/*
2017-07-25 14:55:05 +02:00
param_expand_bash_substring.right
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
param_expand_bash_substring.tests
shell: echo ${?:0} was fixed sometime ago, enable it in tests
2018-01-13 19:28:19 +01:00
param_expand_default.right
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
param_expand_default.tests
hush: remove test for "echo ${-}" errorring out - now it works
2019-05-19 16:35:56 +02:00
param_expand_indicate_error.right
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
param_expand_indicate_error.tests
hush: treat ${#?} as "length of $?"
2017-07-25 15:18:57 +02:00
param_expand_len1.right
hush: fix ${##}, ${#?}, ${#!} handling
2017-07-26 00:07:27 +02:00
param_expand_len1.tests
hush: fix ${##}, ${#?}, ${#!} handling
2017-07-26 00:07:27 +02:00
param_expand_len.right
ash: [PARSER] Fix parsing of ${##1}
2016-10-26 15:56:53 +02:00
param_expand_len.tests
ash: [PARSER] Fix parsing of ${##1}
2016-10-26 15:56:53 +02:00
param_glob.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
param_glob.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
param_subshell.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
param_subshell.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
readonly0.right
ash: [VAR] Move unsetvar functionality into setvareq
2017-07-25 16:29:36 +02:00
readonly0.tests
ash: suppress readonly1.tests false positive; add readonly0.tests
2017-07-21 13:37:25 +02:00
readonly1.right
ash: suppress readonly1.tests false positive; add readonly0.tests
2017-07-21 13:37:25 +02:00
readonly1.tests
ash: suppress readonly1.tests false positive; add readonly0.tests
2017-07-21 13:37:25 +02:00
star.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
star.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
unset.right
ash: [VAR] Move unsetvar functionality into setvareq
2017-07-25 16:29:36 +02:00
unset.tests
ash: [VAR] Move unsetvar functionality into setvareq
2017-07-25 16:29:36 +02:00
var1.right
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var1.tests
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var2.right
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var2.tests
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var3.right
ash: fix handling of duplicate "local"
2015-04-18 19:36:38 +02:00
var3.tests
ash: fix handling of duplicate "local"
2015-04-18 19:36:38 +02:00
var4.right
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var4.tests
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var5.right
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var5.tests
sh testsuite: sync ash-vars/ and hush-vars/
2016-10-02 18:17:15 +02:00
var6.right
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
var6.tests
ahell: update testsuite
2021-07-25 22:03:16 +02:00
var_10.right
ash: parser: Only accept single-digit parameter expansion outside of braces
2020-02-17 10:15:35 +01:00
var_10.tests
ash: parser: Only accept single-digit parameter expansion outside of braces
2020-02-17 10:15:35 +01:00
var_bash1.right
…
var_bash1.tests
…
var_bash1a.right
ash: fix handling of ${VAR: -2}
2016-07-25 03:56:00 +02:00
var_bash1a.tests
typo fix
2017-07-06 19:50:42 +02:00
var_bash1b.right
ash: more general format ${var:EXPR:EXPR}
2017-07-17 17:49:11 +02:00
var_bash1b.tests
ash: more general format ${var:EXPR:EXPR}
2017-07-17 17:49:11 +02:00
var_bash2.right
…
var_bash2.tests
…
var_bash3.right
ash: parser: Add syntax stack for recursive parsing
2018-04-02 13:15:37 +02:00
var_bash3.tests
hush: add support for ${var/pattern/repl}, conditional on bash compat
2010-09-05 14:47:58 +02:00
var_bash4.right
ash: parser: Add syntax stack for recursive parsing
2018-04-02 13:15:37 +02:00
var_bash4.tests
ash testsuite: update some of variable tests with newer versions from hush
2016-10-02 18:08:04 +02:00
var_bash5.right
ash testsuite: update some of variable tests with newer versions from hush
2016-10-02 18:08:04 +02:00
var_bash5.tests
ash testsuite: update some of variable tests with newer versions from hush
2016-10-02 18:08:04 +02:00
var_bash6.right
ash: parser: Add syntax stack for recursive parsing
2018-04-02 13:15:37 +02:00
var_bash6.tests
ash: parser: Add syntax stack for recursive parsing
2018-04-02 13:15:37 +02:00
var_bash7.right
ash: parser: Add syntax stack for recursive parsing
2018-04-02 13:15:37 +02:00
var_bash7.tests
ash: parser: Add syntax stack for recursive parsing
2018-04-02 13:15:37 +02:00
var_bash_pattern_starting_with_slash.right
ash,hush: properly handle ${v//pattern/repl} if pattern starts with /
2018-08-04 22:25:28 +02:00
var_bash_pattern_starting_with_slash.tests
ash,hush: properly handle ${v//pattern/repl} if pattern starts with /
2018-08-04 22:25:28 +02:00
var_bash_repl_empty_pattern.right
ash testsuite: add two hush tests from last commit
2018-01-25 14:09:06 +01:00
var_bash_repl_empty_pattern.tests
ash testsuite: add two hush tests from last commit
2018-01-25 14:09:06 +01:00
var_bash_repl_empty_var.right
ash: match bash behavior for ${empty_var/*/repl}
2021-01-09 08:46:54 +01:00
var_bash_repl_empty_var.tests
ash: fix ${unset_var/pattern/repl}
2021-01-09 08:27:37 +01:00
var_bash_repl_unterminated.right
ash: don't read past end of var in subvareval for bash substitutions
2022-03-01 08:47:43 +01:00
var_bash_repl_unterminated.tests
ash: don't read past end of var in subvareval for bash substitutions
2022-03-01 08:47:43 +01:00
var_expand_in_assign.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_expand_in_assign.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_expand_in_redir.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_expand_in_redir.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_expand_on_ifs.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_expand_on_ifs.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_in_pipes.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_in_pipes.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_leak.right
ash: eval: Variable assignments on functions are no longer persistent
2018-08-05 11:14:11 +02:00
var_leak.tests
ash: eval: Variable assignments on functions are no longer persistent
2018-08-05 11:14:11 +02:00
var_leaks.right
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_leaks.tests
ash testsuite: add most of hust tests which pass for ash
2016-10-03 00:06:55 +02:00
var_LINENO1.right
shells: fix var_LINENO1.tests false positive, add it to ash tests too
2018-03-31 20:31:13 +02:00
var_LINENO1.tests
shells: fix var_LINENO1.tests false positive, add it to ash tests too
2018-03-31 20:31:13 +02:00
var_LINENO2.right
ash: fix LINENO in functions
2021-09-07 18:01:49 +02:00
var_LINENO2.tests
ash: fix LINENO in functions
2021-09-07 18:01:49 +02:00
var_LINENO3.right
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
var_LINENO3.tests
ash: LINENO starts from 0 in -c SCRIPT mode
2021-09-07 18:16:45 +02:00
var_nested1.right
ahell: update testsuite
2021-07-25 22:03:16 +02:00
var_nested1.tests
ahell: update testsuite
2021-07-25 22:03:16 +02:00
var_nested2.right
ahell: update testsuite
2021-07-25 22:03:16 +02:00
var_nested2.tests
ahell: update testsuite
2021-07-25 22:03:16 +02:00
var_posix1.right
ash testsuite: update some of variable tests with newer versions from hush
2016-10-02 18:08:04 +02:00
var_posix1.tests
ash testsuite: update some of variable tests with newer versions from hush
2016-10-02 18:08:04 +02:00
var_serial.right
hush: rework input char buffering to allow more than one-deep peek
2016-09-29 16:59:06 +02:00
var_serial.tests
hush: rework input char buffering to allow more than one-deep peek
2016-09-29 16:59:06 +02:00
var_subst_in_for.right
hush: rework input char buffering to allow more than one-deep peek
2016-09-29 16:59:06 +02:00
var_subst_in_for.tests
hush: rework input char buffering to allow more than one-deep peek
2016-09-29 16:59:06 +02:00
var_unbackslash1.right
ash: fix arithmetic closing )) split by backslash-newline
2016-09-29 17:58:58 +02:00
var_unbackslash1.tests
shell testsuite: add trailing newline to var_unbackslash1.tests
2016-09-29 20:02:53 +02:00
var_unbackslash.right
hush: rework input char buffering to allow more than one-deep peek
2016-09-29 16:59:06 +02:00
var_unbackslash.tests
hush: rework input char buffering to allow more than one-deep peek
2016-09-29 16:59:06 +02:00
var_wordsplit_ifs1.right
ash: expand: Fixed "$@" expansion when EXP_FULL is false
2016-10-02 02:46:56 +02:00
var_wordsplit_ifs1.tests
ash: expand: Fixed "$@" expansion when EXP_FULL is false
2016-10-02 02:46:56 +02:00
var_wordsplit_ifs2.right
ash: [EXPAND] Do not split quoted VSLENGTH and VSTRIM
2016-10-01 20:55:02 +02:00
var_wordsplit_ifs2.tests
ash: [EXPAND] Do not split quoted VSLENGTH and VSTRIM
2016-10-01 20:55:02 +02:00
var_wordsplit_ifs3.right
ash: [EXPAND] Do not split quoted VSLENGTH and VSTRIM
2016-10-01 20:55:02 +02:00
var_wordsplit_ifs3.tests
ash: [EXPAND] Do not split quoted VSLENGTH and VSTRIM
2016-10-01 20:55:02 +02:00
var_wordsplit_ifs4.right
hush: IFS fixes
2018-04-11 16:02:58 +02:00
var_wordsplit_ifs4.tests
hush: IFS fixes
2018-04-11 16:02:58 +02:00
var_wordsplit_ifs5.right
ash: expand: Fix ghost fields with unquoted $@/$*
2018-08-05 14:29:58 +02:00
var_wordsplit_ifs5.tests
ash: expand: Fix ghost fields with unquoted $@/$*
2018-08-05 14:29:58 +02:00
var-do-not-collapse-arithmetic-expansion-at-parse-time.right
ash: remove arithmetic expansion collapsing at parse time
2015-05-18 09:56:16 +02:00
var-do-not-collapse-arithmetic-expansion-at-parse-time.tests
ash: remove arithmetic expansion collapsing at parse time
2015-05-18 09:56:16 +02:00
var-do-not-expand-tilde-in-parameter-expansion-in-quotes.right
ash: do not expand tilde in parameter expansion within quotes
2015-05-18 09:53:26 +02:00
var-do-not-expand-tilde-in-parameter-expansion-in-quotes.tests
ash: do not expand tilde in parameter expansion within quotes
2015-05-18 09:53:26 +02:00
var-do-not-quote-backslashes-in-parameter-expansions-outside-quotes.right
ash: move parse-time quote flag detection to run-time
2015-05-18 09:57:51 +02:00
var-do-not-quote-backslashes-in-parameter-expansions-outside-quotes.tests
ash: move parse-time quote flag detection to run-time
2015-05-18 09:57:51 +02:00
var-expand-tilde-in-parameter-expansion.right
ash: perform tilde expansion in all parameter expansion words
2015-05-18 09:51:35 +02:00
var-expand-tilde-in-parameter-expansion.tests
ash: perform tilde expansion in all parameter expansion words
2015-05-18 09:51:35 +02:00
var-pattern-replacement-in-parameter-expansion-1.right
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-1.tests
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-2.right
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-2.tests
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-3.right
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-3.tests
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-4.right
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-4.tests
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-5.right
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-pattern-replacement-in-parameter-expansion-5.tests
testsuite: add some tests for ash
2015-05-18 10:13:21 +02:00
var-runtime-quote-detection.right
ash: move parse-time quote flag detection to run-time
2015-05-18 09:57:51 +02:00
var-runtime-quote-detection.tests
ash: move parse-time quote flag detection to run-time
2015-05-18 09:57:51 +02:00
var-utf8-length.right
ash: fix corruption of ${#var} if $var contains UTF-8 characters
2016-03-22 18:19:29 -04:00
var-utf8-length.tests
hush: "adopt" ash var-utf8-length.tests
2017-07-06 19:29:23 +02:00